Girls hard and bulging around the navel, mostly due to gynecological diseases, such as uterine fibroids, ovarian tumors, may also be due to intestinal diseases. 1. Gynecological diseases: uterine fibroids are benign tumors formed by the proliferation of uterine smooth muscle tissue. When the fibroid is large, the patient can touch the mass in the lower abdomen, which can cause hardness and bulging around the navel, accompanied by menstrual abnormalities, leukorrhea, lower abdominal distension and other manifestations. Ovarian cysts: cyst-like structures that form within or on the surface of the ovaries, and are most common in women of childbearing age. Most patients with cysts have no obvious symptoms, but when the size of the cyst increases, an abdominal mass may be palpable and symptoms such as lower abdominal discomfort and swelling may occur. In addition, female teratoma, cystadenoma will also be found in the physical examination around the navel hard and bulging performance. 2. Intestinal diseases: intestinal tumor lesions, intestinal spasm, in the physical examination of the abdomen can be seen bulging, bulging sound, and hard. Girls hard and bulging around the navel, should be timely consultation, improve the examination, clear diagnosis and treatment as prescribed by the doctor.