Sciatic nerve pain in pregnant women is mostly caused by the growing size of the uterus as the gestational cycle grows, causing pressure on the lumbosacral region, which can cause painful symptoms when the sciatic nerve is compressed. Other patients suffer from lumbar spine osteophytes before and after pregnancy, which can also cause sciatic nerve pain. It is recommended that patients can choose to go to the orthopedic department of the local public hospital to have an MRI of the lumbar spine and a physical examination of the sciatic nerve. The diagnosis of the disease can be clarified, and according to the specific examination results, the appropriate treatment plan can be selected for treatment.