Pressure pain in the navel does not necessarily mean cancer. In acute appendicitis, there is pain in the upper abdomen and around the navel in the early stage, and pain in the right lower abdomen and fixation of the right lower abdomen. In the early stage if the physical examination, it is possible to press the navel area will appear pressure pain, clear diagnosis can be performed appendix ultrasound, can find the appendix has swelling or around the oozing, can be clear. If there is a mass inside the abdominal cavity, which happens to be near the belly button, and there is pain when pressing the belly button, the source of the mass and the nature of the mass should be further examined, which may be benign or malignant. If it is a benign mass, it needs to be removed surgically, and if it is a malignant tumor, it needs to undergo radical tumor surgery.