Leg pain arm pain may be caused by overwork, osteoporosis, simple influenza and other factors, as follows: 1. overwork: long-term heavy labor or sports time is longer, will make the leg and arm parts of the muscle lactic acid generated too much, can not be metabolized out of the body, will cause arm pain and leg pain symptoms, mainly manifested as soreness, belong to the normal physiological performance. 2. Osteoporosis: lack of calcium in the body of the elderly is too much, will cause osteoporosis, which can lead to arm pain, leg pain, and easy to fracture. 3. Simple influenza: when the weather is cold, no attention is paid to keep the body warm, resulting in the body catching cold and causing influenza, which can also lead to symptoms of sore limbs, and may also be accompanied by sneezing, runny nose and fever. Leg pain arm pain may have other reasons, it is recommended to go to the hospital in time for a clear diagnosis, for physiological factors caused by leg pain arm pain, generally do not need to be dealt with. When there are disease factors, it is recommended to follow the doctor’s instructions for treatment, to prevent the lesions continue to worsen.