The most common clinical cause of leg pain and buttock pain during pregnancy is the increase of the uterus with the increase of the pregnancy month, which compresses the sciatic nerve and causes the symptoms of leg pain and buttock pain. First of all, it is recommended to take vitamin B1 orally to nourish the nerves and relieve the painful symptoms. Secondly, it is recommended to start taking calcium supplements after mid-pregnancy, because the dose of calcium required by pregnant women will increase, and sometimes calcium deficiency will also cause leg pain and buttock pain. In addition, more sunshine should be given in daily life to help relieve this pain symptom. If the pain does not decrease after the above treatment, it is advisable to go to surgery for further treatment to rule out other diseases.