For patients with pain in the stomach of the two legs, it is mainly due to three reasons: First, it is due to strain and cold, such as prolonged standing, walking activities, regular squatting, running and jumping, mountain climbing activities, which can easily lead to spasm and contraction of the muscles in the stomach of the two calves, coupled with cold, it will lead to an increase in the degree of spasm and contraction, thus causing significant pain in the stomach of the two legs. Second, see in trauma, especially after trauma caused by muscle damage on the back side of the two calves, especially obvious pulling injury, resulting in obvious pain symptoms in the muscles on the back side of the two calves. Third, it is seen in the disease of poor venous return, such as varicose veins of the lower limbs, venous valve closure insufficiency of the lower limbs, intermuscular venous thrombosis of the calves of both lower limbs, which will also lead to obvious soreness and pain in the two leg bellies, especially after standing activities, the pain symptoms are especially obvious.