Muscle soreness the day after exercise may be caused by lactic acid buildup, muscle strain, delayed muscle soreness and other factors, and can be relieved by rest, hot compresses, physiotherapy, and the use of drugs such as cloxazone tablets. 1. Lactic acid accumulation: lactic acid accumulation is generally caused by too much exercise, which is a normal physiological phenomenon, this situation can be used to promote blood circulation and lactic acid discharge by hot compresses, massage and other ways. 2. Muscle strain: Muscle strain may be caused by the patient’s exercise intensity exceeding his own tolerance range or improper exercise. For a short period of time, ice packs can be used to relieve pain, after which hot packs can be used to relax the muscles and speed up recovery. You can also take Chlorzoxazone tablets to relax the muscles for treatment. 3. Delayed muscle pain: mostly occurs in the case of exercise before not fully warmed up, can be relieved by taking a hot bath, hot compresses on the affected area, rest and other ways. Severe pain can also be oral non-steroidal anti-inflammatory drugs, such as sodium Loxoprofen. If the patient’s muscle pain continues unabated, he or she should go to the hospital for treatment. The above medications should be used under the guidance of a physician.