Massage muscle soreness, the possible causes are muscle tension, usually lack of exercise, the operator improper techniques. 1. Muscle tension: If it is the first massage, or a long time after the interruption of massage again, may be in the massage muscle tension, not enough relaxation, the body can not cooperate with the operator to carry out the relaxation activities, which may lead to muscle fatigue, or even produce damage, may produce muscle soreness symptoms after massage. 2. usually lack of exercise: may be due to the usual sedentary, lying down for a long time, long time to keep a movement, or usually do not exercise, resulting in excessive accumulation of lactic acid in the muscle, this time the massage may make the lactic acid in the muscle to stimulate the muscle, resulting in muscle swelling, soreness and so on. 3. Improper operator techniques: massage is a therapeutic method, massage strength and massage time have certain requirements, if the massage power is small, can not achieve the therapeutic effect. If the massage force is too large or massage time is too long, may cause muscle or other soft tissues are strongly stimulated, local lactic acid accumulation, resulting in localized slight edema or produce aseptic inflammation, slight bleeding points, so that muscle soreness. Massage muscle soreness may also have other reasons, it is recommended to go to the regular hospital in a timely manner to improve the relevant examination, clear the cause of the disease, under the guidance of the doctor for targeted treatment or treatment.