Usually muscle aches and pains during fever are caused by the following three reasons: First, the common cause of fever is an infectious reaction caused by the invasion of sexual bacteria, viruses and pathogenic microorganisms into the organism. When the above pathogenic microorganisms invade the organism, they cause the release of toxins, which usually have interleukins, prostaglandins, prostacyclins, leukotrienes inflammatory mediators in the body when they are released and travel, they can significantly stimulate the nerve roots and cause muscle soreness in the peripheral body. Second, in the human body when the fever will release too much lactic acid and creatine kinase, acid accumulation in the body, especially in the relatively developed muscle groups of transverse and skeletal muscle accumulation, will pass to produce circumferential muscle pain. Third, in special diseases, such as heat cramps and heat exhaustion of heat stroke, the body temperature will increase, which will cause convulsions, and pain in the peripheral muscles after convulsions.