Pregnant women who cannot walk because of hip pain may be related to the following reasons: 1. It may be caused by diseases such as sciatica. During pregnancy, the physiological curvature of the lumbar spine changes greatly, and the muscles of the buttocks are easily tense. If the buttocks are cold, this may easily lead to inflammation of the sciatic nerve, which may cause significant pain in the posterior and lateral parts of the buttocks, and obvious radiating pain to the lower limbs. The patient is often used to curling the lower extremities and is not able to walk with weight on the ground. 2, may be due to anal-related lesions, during pregnancy due to fetal pressure, such patients are very likely to have hemorrhoids, perianal abscesses or constipation, anal fissures. The condition may be caused by a lesion of the sacroiliac joint. This condition is also often due to rapid fetal growth, resulting in excessive load around the sacroiliac joint, which may cause inflammation of the sacroiliac joint, resulting in pain and inability to walk. Finally, this condition can also be caused by spasms in the hip muscles that are too tight, resulting in the inability to walk.