Children with fever leg pain can not stand up may be related to the usual habits, but also may be a fever after the emergence of symptoms. 1. lifestyle habits, if the child often too much strenuous exercise, will lead to a temporary increase in body temperature, at the same time the accumulation of lactic acid in the body may appear leg pain can not stand up symptoms. 2. Symptoms after the fever, the child fever due to the body’s metabolic ability to accelerate, may lead to an increase in the body’s metabolic products, the body is stimulated by the body may appear weak, leg pain can not stand up symptoms; if it is a viral cold, the invasion of viruses into the body may also lead to muscle aches and pains. If there are obvious fever symptoms, it is recommended to seek medical examination and treatment in a timely manner so as not to affect the child’s physical recovery.