There are various causes of sciatica after hip surgery: 1. First, blood sedimentation and C-reactive protein should be checked, and if they are normal, infection can be ruled out. 2, then review the hip x-ray to see if there is prosthesis loosening. Treatment suggestions: 1, braking the affected limb; 2, local physiotherapy; 3, symptomatic oral pain medication; 4, sciatic nerve block, can significantly relieve symptoms; 5, anti-osteoporosis treatment; drugs can be used alun phosphate sodium + salmon calcitonin. Because alun phosphate sodium for 3 months to 6 months can significantly increase the amount of bone around the prosthesis. Salmon calcitonin has good effect on osteoporotic bone pain. 6.If conservative treatment is not effective, revision surgery is recommended.