Normal people’s abdominal muscles are soft, if there is a hard feeling around the belly button when pressed, it means that there may be a mass in the abdominal cavity, which may be a benign mass or a malignant tumor. First of all, you have to lie on the bed with your legs flexed, and then press carefully with your hands to determine the location, size, boundary and mobility of the mass. Then, go to the hospital for examination, you can perform colonoscopy, gastroscopy, abdominal CT examination, and also need to check the blood routine, tumor indicators and so on. If it is suspected that there is a tumor in the abdominal cavity, it is necessary to perform radical tumor surgery, and after the surgery, it will be sent to the pathology examination. According to the results of pathological examination, the next treatment plan will be decided, and if it is gastric cancer or colon cancer, chemotherapy is also needed.