diff --git a/mintpy/prep_hyp3_crop.py b/mintpy/prep_hyp3_crop.py
new file mode 100644
index 000000000..ca926adc3
--- /dev/null
+++ b/mintpy/prep_hyp3_crop.py
@@ -0,0 +1,319 @@
+#!/usr/bin/env python3
+############################################################
+# Program is part of VEG-tools                             #
+# Copyright (c) 2021,         VEG                          #
+# Author: Xie Lei, Wang Jiageng,  Jun 2022                 #
+# A special thank to Benjy Marks                           #
+# The environment needs to install hyp3lib                 #
+############################################################
+import argparse
+import os
+import shutil
+import glob
+from zipfile import ZipFile
+import numpy as np
+import pathlib
+from osgeo import gdal
+from osgeo import osr
+from hyp3lib.cutGeotiffs import cutFiles
+import mintpy.prep_hyp3
+
+
+def gdal_clip(source_path, target_extent, output_path=None, target_format='GTiff', flag_prompt=False):
+    """
+    Generate and run gdal command for clip img
+    :param source_path: source path need to be clipped
+    :param target_extent: e_min north_min e_max north_max
+    :param output_path: output path, can be None
+    :param target_format: Default GTiff
+    :param flag_prompt: Default False
+    :return:
+    """
+    # gdalwarp cmd
+    # e.g., gdalwarp -te 78.25 30.22 78.67 30.64 -of GTiff input output
+
+    if output_path is None:
+        p = pathlib.Path(os.path.abspath(source_path))
+        output_path = os.path.join(p.parent, '%s_clip%s' % (p.stem, p.suffix))
+
+    cmd = 'gdalwarp -te %s %s %s %s -of %s %s %s' % (
+        target_extent[0], target_extent[1], target_extent[2], target_extent[3],
+        target_format, source_path, output_path)
+    if flag_prompt:
+        print(':: GDAL cmd: %s' % cmd)
+        print('-' * 50)
+
+    os.system(cmd)
+    return True
+
+
+def read_img(filename):
+    dataset = gdal.Open(filename)
+
+    im_width = dataset.RasterXSize
+    im_height = dataset.RasterYSize
+
+    im_geotrans = dataset.GetGeoTransform()
+    im_proj = dataset.GetProjection()
+    im_data = dataset.ReadAsArray(0, 0, im_width, im_height)
+
+    minx = im_geotrans[0]
+    maxy = im_geotrans[3]
+    maxx = minx + im_geotrans[1] * dataset.RasterXSize
+    miny = maxy + im_geotrans[5] * dataset.RasterYSize
+
+    im_extent = [minx, maxx, miny, maxy]
+    del dataset
+    return im_proj, im_geotrans, im_data, im_extent
+
+
+def hyp3_reprojection(utm_path, latlon_path):
+    gdal.AllRegister()
+    src_data = gdal.Open(utm_path)
+    src_srs_wkt = src_data.GetProjection()
+    src_srs = osr.SpatialReference()
+    src_srs.ImportFromWkt(src_srs_wkt)
+    src_width = src_data.RasterXSize
+    src_height = src_data.RasterYSize
+    src_trans = src_data.GetGeoTransform()
+    origin_lx_src = src_trans[0]
+    origin_ty_src = src_trans[3]
+    pixl_w_src = src_trans[1]
+    pixl_h_src = src_trans[5]
+    origin_rx_src = origin_lx_src + pixl_w_src * src_width
+    origin_by_src = origin_ty_src + pixl_h_src * src_height
+    driver = gdal.GetDriverByName("GTiff")
+    driver.Register()
+    dst_data = driver.Create(latlon_path, src_width, src_height, 1, gdal.GDT_Float32)
+    dst_srs = osr.SpatialReference()
+    dst_srs.ImportFromEPSG(4326)
+    dst_srs.ImportFromProj4("proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs")
+    ct = osr.CoordinateTransformation(src_srs, dst_srs)
+    origin_lx_dst, origin_ty_dst, temp = ct.TransformPoint(origin_lx_src, origin_ty_src)
+    origin_rx_dst, origin_by_dst, temp1 = ct.TransformPoint(origin_rx_src, origin_by_src)
+    pixl_w_dst = (origin_rx_dst - origin_lx_dst) / src_width
+    pixl_h_dst = (origin_by_dst - origin_ty_dst) / src_height
+    dst_trans = [origin_lx_dst, pixl_w_dst, 0, origin_ty_dst, 0, pixl_h_dst]
+
+    dst_srs_wkt = dst_srs.ExportToWkt()
+    dst_data.SetGeoTransform(dst_trans)
+    dst_data.SetProjection(dst_srs_wkt)
+    data = src_data.GetRasterBand(1).ReadAsArray()
+    dst_data.WriteArray(data)
+    dst_data.FlushCache()
+
+
+def unzip_crop(workdir: str, geo_box, target_dir):
+    #
+    # lower left
+    lonlat_ll = [geo_box[2], geo_box[1]]
+    # up right
+    lonlat_ur = [geo_box[3], geo_box[0]]
+
+    os.chdir(workdir)
+    file_list = glob.glob('*_*')
+    file_list.sort()
+    if os.path.isdir(target_dir) and target_dir != '':
+        shutil.rmtree(target_dir)
+    ################
+    else:
+        target_dir = os.path.join(pathlib.Path(os.path.abspath(
+            workdir)).parent, pathlib.Path(os.path.abspath(workdir)).stem + '_clip')
+
+    if os.path.isdir(target_dir):
+        shutil.rmtree(target_dir)
+    os.mkdir(target_dir)
+    target_extent = (lonlat_ll[0], lonlat_ll[1], lonlat_ur[0], lonlat_ur[1])
+
+    print(" Wait")
+    # conduct the clip operation
+    for i in range(len(file_list)):
+        tmp_tif_file_list = glob.glob('%s/*.tif' % file_list[i])
+        tmp_target_dir = os.path.join(target_dir, file_list[i])
+        if os.path.isdir(tmp_target_dir):
+            shutil.rmtree(tmp_target_dir)
+        os.mkdir(tmp_target_dir)
+        for tmp_file in tmp_tif_file_list:
+            p = pathlib.Path(os.path.abspath(tmp_file))
+            tmp_output_path = os.path.join(
+                tmp_target_dir, '%s_clip%s' % (p.stem, p.suffix))
+            # Transfer the reference from WGS84 UTM into WGS84
+            p_out = os.path.abspath(tmp_output_path)[:-9] + '_latlon.tif'
+            hyp3_reprojection(os.path.abspath(p), p_out)
+            _, _, im_data, im_extent = read_img(p_out)
+            im_extent = crop_region_banpick(target_extent, im_extent)
+            if target_extent == (-181, -91, 181, 91):
+                p_rename = os.path.abspath(p_out)[:-4] + '.tif'
+                os.rename(p_out, p_rename)
+                # leave the generate of *_clip.tif below
+            else:
+                # transfer *.clip.tif  into *_clip.tif
+                # to meet the requirement of prep_hyp3
+                p_rename = os.path.abspath(p_out)[:-4] + '_clip.tif'
+                gdal_clip(p_out, im_extent, output_path=p_rename)
+                os.remove(p_out)
+        # copy the txt file into
+        txt_name = file_list[i] + '/' + file_list[i] + '.txt'
+        txt_name1 = file_list[i] + '.txt'
+        txt_path0 = os.path.join(workdir, txt_name)
+        txt_path1 = os.path.join(tmp_target_dir, txt_name1)
+        shutil.copy(txt_path0, txt_path1)
+        print(':: [%s] Transferd and Clipped files in: %s' % (i + 1, os.path.abspath(file_list[i])))
+
+    # do the clip for transformed but clipped via hyp3lib.cutFiles
+    files = []
+    if target_dir == '':
+        wk1_dir = workdir + '_clip'
+    else:
+        wk1_dir = target_dir
+
+    print("current path:  " + workdir)
+    if os.path.exists(wk1_dir):
+        filetypes = ['unw_phase', 'corr', 'dem', 'lv_theta', 'water_mask']
+        for root, _, file_list in os.walk(wk1_dir):
+            for file in file_list:
+                for f in filetypes:
+                    if f + '_latlon.tif' in file and f + '_latlon.tif.xml' not in file:
+                        full_path = os.path.join(root, file)  # Get the full path to the file
+                        files.append(full_path)
+        print("There are " + str(len(files)) + " satisfied files")
+        # Generate
+        cutFiles(files)
+        print('The crop process has finished')
+    # generate _clip.tif.rsc
+    for i in files:
+        if target_extent == (-181, -91, 181, 91):
+            mintpy.prep_hyp3.main(files)
+        else:
+            clip_files = ['', i[:-4] + '_clip.tif']
+            mintpy.prep_hyp3.main(clip_files)
+
+
+def unzip_files(work_dir, target_postfix_list):
+    # return the path that contains unziped files
+
+    os.chdir(work_dir)
+    file_list = glob.glob('*.zip')
+    file_list.sort()
+
+    primary_date_list = [file_list[i][5:13] for i in range(len(file_list))]
+    secondary_date_list = [file_list[i][21:29] for i in range(len(file_list))]
+    extract_name_list = ['%s_%s' % (primary_date_list[i], secondary_date_list[i])
+                         for i in range(len(file_list))]
+
+    target_dir = os.path.join(os.path.dirname(pathlib.Path(work_dir)), 'unzip')
+    if os.path.isdir(target_dir):
+        shutil.rmtree(target_dir)
+    os.mkdir(target_dir)
+    for i in range(len(file_list)):
+        print(':: [%s] Unpack file: %s' % (i + 1, file_list[i]))
+        # make a new directory for the target unzip files
+        current_target_path = os.path.join(target_dir, extract_name_list[i])
+        if os.path.isdir(current_target_path):
+            shutil.rmtree(current_target_path)
+        os.mkdir(current_target_path)
+        # unzip target files
+        with ZipFile(file_list[i], 'r') as zipObject:
+            # post_idx = 0  # index for postfix
+            zip_file_list = zipObject.namelist()
+            for tmp_file in zip_file_list:
+                if tmp_file.endswith(tuple(target_postfix_list)):
+                    # get tmp_post name
+                    # get index -> get name
+                    tmp_post = np.array([tmp_file.find(tmp)
+                                         for tmp in target_postfix_list])
+                    tmp_post = tmp_post[tmp_post != -1][0]
+                    tmp_post = tmp_file[tmp_post:]
+                    # unzip step
+                    zipObject.extract(tmp_file, target_dir)
+                    # copy and rename target file
+                    copy_path = current_target_path
+                    copy_path = os.path.join(copy_path, '%s_%s' % (
+                        extract_name_list[i], tmp_post))
+                    source_path = glob.glob('%s/S1*/*%s' %
+                                            (target_dir, tmp_post))[0]
+                    shutil.copy(source_path, copy_path)
+
+                # add a judgement of .txt and not .md.txt
+                # copy the renamed.txt into a correct area
+                if tmp_file.endswith('.txt') and not tmp_file.endswith('README.md.txt'):
+                    print("Have not done yet")
+
+            # delete tmp file
+            tmp_unzip_path = glob.glob('%s/S1*' % target_dir)[0]
+            shutil.rmtree(tmp_unzip_path)
+    return target_dir
+
+
+def crop_region_banpick(geobox, imgbox):
+    region = [0.0, 0.0, 0.0, 0.0]
+    if geobox[0] == -181:
+        region[0] = imgbox[2]
+    if geobox[1] == -91:
+        region[1] = imgbox[0]
+    if geobox[2] == 181:
+        region[2] = imgbox[3]
+    if geobox[3] == 91:
+        region[3] = imgbox[1]
+    return region
+
+
+def asf_crop(work_dir, geobox, crop_state, out_path):
+    # geobox represent the n,s,w,e
+    # e.g., wrapped_phase.tif, inc_map.tif, water_mask.tif,
+    if geobox[:] == [91, -91, -181, 181] and crop_state == 1:
+        print("the crop state code is crop but the region has not been input")
+        exit()
+    elif crop_state == 0:
+        geobox = [91, -91, -181, 181]
+    # adjusted geobox before, the bounding should not need to be adjusted after.
+    target_postfix_list = ['corr.tif', 'unw_phase.tif', 'dem.tif', 'lv_theta.tif', 'water_mask.tif']
+    target_path = out_path
+
+    unzip_crop(workdir=work_dir, geo_box=geobox, target_dir=target_path)
+
+    return 0
+
+
+def main():
+    str_h = """Example usage: 
+    asf_crop.py --i /Examples/asf_hyp3_unzip/ --o /Examples/asf_utm_hyp3/
+    asf_crop.py --i /Examples/asf_hyp3_unzip/ --o /Examples/asf_utm_hyp3/ --c 1 --e -91.5  --n 1.5 
+    asf_crop.py --i /Examples/asf_hyp3_unzip/ --o /Examples/asf_utm_hyp3/ --c 1 --e -91.5 --w -90 --n 1.5 --s -0.75  
+    
+    # rely on asf-hyp3-lib, please install it at here 
+    
+    # we plan to add a new script to 
+    # add a filter for --sd start-date
+    # add a filter for --ed end-date
+    # add a filter for area co-coverage, although this may be covered by frame and path.
+    # add a if-else function for invalid area recognise.
+    # to avoid some edge set by 0.0, we use impossible value for N,S,W,E. This may be improved soon.
+    
+    # need to use the unzipped folder to run the script.
+    
+    """
+    parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter, description=str_h)
+    parser.add_argument('--i', type=str, help="The input folder path that contains all unzipped datas")
+    parser.add_argument('--o', type=str, default='', help="The output folder path that contains all the cropped files")
+    parser.add_argument('--c', type=int, default=0, help="0 = do not crop, 1 = do the crop")
+    parser.add_argument('--n', type=float, default=91, help="north latitude")
+    parser.add_argument('--s', type=float, default=-91, help="south latitude")
+    parser.add_argument('--w', type=float, default=-181, help="west latitude")
+    parser.add_argument('--e', type=float, default=181, help="east latitude")
+    args = parser.parse_args()
+
+    # edge = n,s,w,e
+
+    try:
+        asf_crop(work_dir=args.i, geobox=[args.n, args.s, args.w, args.e], crop_state=args.c, out_path=args.o)
+    except Exception as e:
+        print("Something wrong")
+        print(e)
+    finally:
+        print("Crop process has finished")
+    return 0
+
+
+if __name__ == '__main__':
+    main()