Hard pressure and pain in the navel may be a mass in the abdominal cavity, benign masses and malignant tumors are possible. Of course, the origin of the mass is also different, may originate from the small intestine, may originate from the mesentery, may also originate from the gastric sinus, or duodenum, pancreatic head may, need to carry out abdominal enhancement CT as well as gastroenteroscopy to further clarify the origin of the mass and the nature of the mass. If the tumor is gastric mesenchymal tumor or small intestinal mesenchymal tumor, laparoscopic mesenchymal tumor resection can be performed without lymph node dissection; if the tumor is malignant, such as gastric sinus cancer, radical treatment of distal gastric cancer is needed; if it is a tumor in the head of pancreas, pancreaticoduodenectomy is needed.