Muscle pain in the stomach, generally common clinical causes are mainly the following: a. Patients inadvertently hit the muscles of the abdomen during strenuous activities, which can cause local soft tissue injury, accompanied by intertendon hematoma formation. At this time, there will be obvious swelling and pain in the muscle, which can be relieved by local icing to reduce tissue exudation, and after 48 hours, massage and physiotherapy, and external application of blood-activating and stasis-removing cream to promote faster absorption of soft tissues and hematoma. For patients with progressive increase of hematoma, surgical incision of subcutaneous and skin tissues can be considered to remove the hematoma and relieve the painful symptoms of muscles as soon as possible. Second, abdominal wall fibrosarcoma invades the nerves of the abdominal wall, which may also cause intractable pain. In this case, it is recommended to improve the ultrasound or CT examination of the abdomen as soon as possible to clarify the size and location of the sarcoma, and then perform surgery to remove the abdominal sarcoma as far as possible, combined with radiotherapy and systemic chemotherapy to kill the local cancer cells after surgery, so as to reduce the muscle pain symptoms in the stomach.