The right leg is always sore may be caused by physiological factors such as over-exercise and muscle strain, or it may be caused by pathological reasons such as osteoporosis and lumbar diseases. 1. Physiological factors: regular heavy exercise, training or sedentary people may lead to fatigue injury or strain of the right leg muscles, resulting in long-term anaerobic fermentation of the muscles in the environment, the accumulation of lactic acid and other metabolites, stimulation of the nerve root to appear soreness symptoms. Most of the symptoms can be relieved after simple physical therapy and usually last no more than 1 month. 2. Pathological factors: when the nerves innervating the right leg area and the local internal environment are diseased, the above symptoms may also occur, such as lumbar intervertebral disc herniation compressing the nerves; rapid bone loss or calcium and phosphorus metabolism disorders caused by a variety of reasons can lead to local hydrogen ions, bicarbonate ions can not be neutralized, which will also lead to pain symptoms. If the symptoms of right leg pain are not relieved, or accompanied by other symptoms, you should go to the hospital in time, and give targeted treatment after clarifying the cause.