Navel center pain when pressed may be caused by gastrointestinal dysfunction, acute appendicitis, umbilical hernia and umbilical cord infection. 1. gastrointestinal tract dysfunction: the navel right in the middle of a press on the pain may be due to inappropriate diet, such as not long ago, overeating, spicy stimulation of the diet, caused by gastrointestinal tract spasms, flatulence, gastrointestinal flora disorders, gastroenteritis, gastrointestinal tract dysfunction. 2. Acute appendicitis: the navel right in the middle of a press on the pain may be acute appendicitis, the typical symptom is pain around the umbilicus, a few hours later can be transferred to the right lower abdomen. 3. Umbilical hernia: the navel right in the middle of the pain may be umbilical hernia. The umbilicus is a congenital weak area of the human body, due to long-term increase in abdominal pressure such as coughing, constipation, will lead to abdominal contents from this weak area protrudes, the formation of congenital or acquired umbilical hernia. Some smaller umbilical hernias will not form an obvious protruding mass, but the abdominal contents stuck in the hernia sac will lead to umbilical pressure pain. 4. Umbilical infection: the navel right in the middle of the pain when pressed may be umbilical infection, the umbilical skin is also a good area for skin infections, due to the umbilical cord for a long time without cleaning, or congenital umbilical ureteric fistula, etc., are prone to cause umbilical infection. It should be noted that in addition to the above, pain on pressure right in the middle of the navel cannot exclude the possibility of other diseases. However, no matter which situation, it is recommended to consult a doctor in time, under the guidance of regular medical institutions and professional doctors for standardized treatment.