How to relieve the soreness that occurs in the muscles behind the thighs needs to be clarified as to the cause. Is it due to the recent period of long distance walking, or strenuous sports, resulting in a large accumulation of local metabolic lactic acid to stimulate the muscles of the leg, causing the appearance of soreness. If it is due to this cause, the patient can do is more bed rest, bed rest is the best way to relieve, but also appropriate muscle massage of the thigh area. You can knead or pinch the legs in order from below the legs upwards, which can facilitate the discharge of metabolic products. In addition, you can also choose hot compresses or hot baths, which can also be very good to promote the discharge of metabolites, can relieve the soreness. If the soreness is severe, the patient can take oral pain medication as an auxiliary treatment, such as diclofenac sodium.