After doing deep squat thigh muscle soreness caused by lactic acid buildup can be appropriate rest, the use of hot packs, massage, stretching and other relief; if there is a muscle strain, should be appropriate braking, the pain is serious need medication. Thigh muscle soreness after squatting is mainly due to anaerobic exercise of the thigh muscles, producing a large amount of lactic acid, resulting in lactic acid buildup, such muscle soreness is mostly a dull pain, no fixed pain points. Proper rest after exercise will relieve the symptoms; you can also use hot packs, massage, stretching and other treatments to reduce pain. If squatting leads to muscle strain, this pain is often sharp pain, with a clear pain point, the need for appropriate braking rest, reduce the activity of the affected limbs, if the pain is serious, you can also take oral ibuprofen, celecoxib and other non-steroidal anti-inflammatory analgesic drugs, but also can be used externally to alleviate the symptoms of diclofenac diethylamide cream. It is recommended to exercise scientifically and reasonably, do not over-exercise. If the body is not adapted to timely visit the hospital, under the guidance of the physician, after the cause is clear to give targeted treatment, do not blindly use drugs.