Women’s stomach and lower abdomen hidden pain to consider with menstruation, ovulation and other physiological factors and pelvic mass, uterine fibroids, pelvic inflammatory disease, infectious enteritis and other diseases related. 1. Physiological factors: women in the menstrual period, due to the role of prostaglandins lead to pelvic tissue congestion and edema, so there will be a hidden pain in the lower abdomen; for women in the ovulation period, due to the liquid in the follicle after ovulation will enter the pelvis, resulting in a small amount of pelvic effusion, at this time, women will also be hidden pain in the lower abdomen, lumbar pain and other discomforts. 2. Pathologic factors: (1) Pelvic mass: for patients who are combined with ovarian cysts, endometriosis cysts, hydrosalpinx and other diseases, due to the local tissues being pulled and stimulated, so there will be hidden pain in the lower abdomen, swelling and other discomforts, and in case of cyst tip torsion, there will be sudden and severe pain. Uterine fibroids: For patients with uterine fibroids, if the size is relatively large, it will stimulate the peripheral nerves, and then abdominal pain, lumbago and other discomforts will occur. (3) Pelvic inflammatory disease: for patients with pelvic inflammatory disease, due to Chlamydia trachomatis, Neisseria gonorrhoeae and other pathogens infected uterine body, adnexa, or pelvic connective tissues will lead to localized congestion and edema, so that women will experience abdominal pain, leukorrhea, fever and other discomforts. (4) Infectious enteritis: If women have diarrhea, lower abdominal pain and other discomforts after taking spoiled food, they should be alert to the occurrence of enteritis. For women with vague pain in the lower abdomen, it is recommended that they go to a regular hospital, complete blood tests, ultrasound and other related tests to determine the cause of the disease, and then actively treated under the guidance of the doctor.