Drinking leg pain may be caused by gout, femoral head necrosis, old fracture and so on. 1. Gout: the cause of gout is still unclear, it may be related to heredity, uric acid excretion disorder, etc. Common triggering factors include drinking alcohol or eating purine-rich food. Patients will have joint pain, redness, swelling, elevated skin temperature and other symptoms, so some patients will have leg pain after drinking alcohol. 2. Necrosis of the femoral head: the cause of necrosis of the femoral head is not clear, but it is considered to be related to trauma to the hip, heavy use of glucocorticoids, and long-term heavy alcohol consumption. Patients will have pain in the groin area, and the pain will radiate to the knee and hip. If the patient develops femoral head necrosis after drinking a lot of alcohol, he or she will have symptoms of leg pain. 3. Stale fracture: Stale fracture is caused by fresh fracture untimely treatment or improper treatment, etc. Patients will have local pain, limitation of limb function, local swelling and other manifestations. If the patient has a stale fracture of the leg, it will stimulate the inflammation attack after the patient drinks alcohol, which is easy to aggravate the performance of leg pain. There are many reasons for leg pain after drinking, and you need to seek medical treatment in time, and the doctor will treat the cause.