A woman’s back pain after sex may be the result of physiological factors such as intense coitus movements, too many coitus times, or it may be the result of other causes such as ovarian cysts, endometriosis, and adenomyosis. 1. Physiological factors: a woman’s sexual life is more violent action, easy to induce the performance of lumbago. In addition, a woman’s more frequent coitus will also make the lumbar muscles tired, also easy to appear after sex back pain performance. 2. Ovarian cysts: Ovarian cysts are considered to be caused by abnormal hormone levels in the body, pelvic infection, poor diet and other factors. Patients will have lumbosacral pain, abdominal pain, abdominal distension and other manifestations, so patients will have symptoms of back pain after sex. 3. Endometriosis: Endometriosis may be caused by heredity, retrograde flow of menstrual blood, medical implantation and other reasons. The patient will have dysmenorrhea and the pain will radiate to the lumbosacral region, so the woman will have back pain after sex. 4. Other: a woman’s back pain after sex is also considered to be caused by adenomyosis, lumbar muscle strain and other diseases. If it is physiological factors that cause a woman to experience back pain after sex, it does not require treatment and will usually be relieved after rest. For disease-induced women who have back pain after sex, you need to consult a doctor in time, and follow the doctor’s instructions for treatment.