diff --git a/fealpy/fem/LinearElasticityOperatorIntegrator.py b/fealpy/fem/LinearElasticityOperatorIntegrator.py
index 316931d85..4bd1c1902 100644
--- a/fealpy/fem/LinearElasticityOperatorIntegrator.py
+++ b/fealpy/fem/LinearElasticityOperatorIntegrator.py
@@ -1,23 +1,24 @@
 import numpy as np
 
 class LinearElasticityOperatorIntegrator:
-    def __init__(self, lam, mu, q=3):
+    def __init__(self, lam, mu, q=None):
         self.lam = lam
         self.mu = mu
-        self.q = q
+        self.q = q 
 
     def assembly_cell_matrix(self, space, index=np.s_[:], cellmeasure=None, out=None):
         """
         construct the linear elasticity fem matrix
         """
 
-        q = self.q
         lam = self.lam
         mu = self.mu
-
-        GD = len(space) 
         mesh = space[0].mesh
         ldof = space[0].number_of_local_dofs()
+        p = space[0].p
+        GD = mesh.geo_dimension()
+        q = self.q if self.q is not None else p+1
+
 
         if cellmeasure is None:
             cellmeasure = mesh.entity_measure('cell', index=index)
diff --git a/test/fem/test_linear_elasticity.py b/test/fem/test_linear_elasticity.py
new file mode 100644
index 000000000..11a39f220
--- /dev/null
+++ b/test/fem/test_linear_elasticity.py
@@ -0,0 +1,26 @@
+import numpy as np
+
+import pytest
+
+def test_linear_elasticity_lfem(p, n):
+    """
+    @brief Lagrange 元求解线弹性问题
+    """
+    from fealpy.pde.linear_elasticity_model import BoxDomainData2d
+    from fealpy.mesh import TriangleMesh
+    from fealpy.functionspace import LagrangeFESpace as Space
+    from fealpy.functionspace import LagrangeFiniteElementSpace as OldSpace
+    from fealpy.fem import LinearElasticityOperatorIntegrator
+    from fealpy.fem import BilinearForm
+    from fealpy.fem import LinearForm
+
+    pde = BoxDomainData2d()
+    domain = pde.domain()
+    mesh = TriangleMesh.from_box(box=domain, nx=n, ny=n)
+    space = Space(mesh, p=p)
+
+    bform = BilinearForm(space)
+    bform.add_domain_integrator(LinearElasticityOperatorIntegrator(pde.lam)
+    bform.assembly()
+
+