Fever is a symptom of elevated body temperature caused by germ infection with inflammation in the body. Fever can cause joint and muscle aches and pains due to the effects of germ toxins and inflammatory factors. In addition, the body uses more energy to fight the virus, which results in faster respiration and metabolism, resulting in more metabolic waste. The accumulation of metabolic wastes in the joints can also lead to joint pain, which is a normal febrile reaction. You can take acetaminophen extended-release tablets or paracetamol to reduce fever, and apply fever patches for physical cooling. You can also use hot water bags to apply hot compresses to the sore joints to relieve the symptoms. You can also take hot baths and drink more ginger soup and brown sugar water to help increase sweating and help reduce fever. In addition, during the fever, you should also pay attention to replenish sufficient energy, eat more lean porridge, milk, soy milk, fresh vegetables and fruits and other nutritious and well-digested foods to help the recovery of the disease. When the body temperature returns to normal, the symptoms of joint pain will gradually disappear.