Hardness around the belly button in women is not normal and may be caused by constipation due to indigestion and gynecological related diseases. The subcutaneous muscle hardness is a normal phenomenon, the navel around the distribution of the rectus abdominis muscle, symmetrical distribution on both sides, most often seen in people who usually exercise regularly. Constipation caused by indigestion, spleen and stomach digestive function will be reduced when the gastrointestinal peristalsis slowed down, the stool can not be discharged in time will be stagnant in the intestine, so there will be hard lumps around the navel, accompanied by abdominal distension, acid reflux, belching, nausea, vomiting, loss of appetite and other symptoms, after the stool or exhaust the hard lumps in the abdomen can be relieved and disappear. Women may also have gynecological related diseases, such as uterine inflammation, cervicitis, ovarian inflammation, uterine fibroids and ovarian cysts and other gynecological diseases will have the phenomenon of hardness around the navel, usually accompanied by irregular menstruation and leucorrhea abnormalities.