Inner thigh pain in the fifth month of pregnancy is mainly caused by pregnancy factors and pregnancy complications, such as an enlarged uterus compressing the sciatic nerve and affecting venous reflux, and physical therapy can be given to alleviate the symptoms. If it is caused by calcium deficiency, trauma and other causes of inner thigh pain, the original disease should be treated first. I. Pregnancy factor: Due to the enlargement of the uterus, it compresses the sciatic nerve and causes inner thigh pain, massage can be given to relieve the pain symptoms. Second, pregnancy complications: 1, calcium deficiency: calcium deficiency is more common during pregnancy, because during pregnancy the fetus grows and develops rapidly in the uterine cavity, calcium intake and supplementation demand is large, and pregnant women do not take calcium supplements in a timely manner, resulting in the aggravation of calcium deficiency in pregnant women, which in turn leads to inner thigh pain, trace element examination should be conducted, and under the guidance of the doctor drug supplementation calcium, also can be supplemented by diet calcium; 2, trauma: if If a pregnant woman has a bump or other traumatic injury, pain can also occur, need to clarify the past history, go to the hospital for further examination and treatment; 3, lumbar disc protrusion: lumbar disc protrusion during pregnancy will compress the nerve pain, it is recommended to do some physical therapy, such as hot compresses, pay attention to rest, usually avoid prolonged standing, walking, sitting, bending, pain is obvious timely medical treatment.