If the left thigh medial tendon pain is caused by left thigh inguinal ligament strain, pelvic X-ray examination can be carried out; if caused by the left inguinal lymphadenitis, blood routine, ultrasound and other tests; if caused by the left femoral head necrosis, lumbar disc herniation, CT, MRI and other tests. 1. Left thigh groin ligament strain: due to improper or excessive exercise, it can lead to pain in the left inner thigh tendon. Physician’s examination will show localized pressure pain, skin bruising or redness, combined with pelvic X-ray examination can confirm the diagnosis. 2. Left inguinal lymphadenitis: caused by inflammation and infection, manifested as pain in the left inner thigh with localized lymph node enlargement and other manifestations, can be carried out blood test, ultrasound and other tests to further clarify the diagnosis. 3. Bone necrosis on the left side: due to trauma, alcohol consumption, long-term application of hormones and other factors, can be manifested as pain in the inner side of the left thigh accompanied by difficulty in walking and other manifestations, feasible magnetic resonance and other related tests to further clarify the diagnosis. 4. Lumbar disc herniation: due to lumbar disc herniation or bulging compression of the sciatic nerve, there may be pain in the left inner thigh, accompanied by radiating pain, lumbar pain and other symptoms. Lumbar spine CT or MRI examination can be conducted to further clarify the diagnosis. Need to go to a regular hospital, by the physician according to the different causes of the corresponding examination and treatment, can not be randomly used drugs.