Bleeding during sex during menopause has more causes, which may be caused by cervical lesions, endometrial lesions, ovarian malignant tumors and so on. 1. Cervical lesion: If there is cervical lesion, it can also be manifested as postmenopausal irregular vaginal bleeding, most of which occurs during coitus and usually accompanied by watery, fishy-smelling discharge. 2. Endometrial lesions: If there is endometrial cancer and other lesions, most of them are manifested as irregular vaginal bleeding after menopause, and may be accompanied by bloody or plasma discharge. 3. Ovarian malignant tumors: if there are ovarian malignant tumors and other diseases, usually in the early stage of no special symptoms, if the main symptoms of the late stage of the abdominal mass, abdominal fluid, bleeding and other phenomena, and may cause postmenopausal vaginal bleeding. During menopause sex will bleed there may be other reasons, need to go to the hospital in a timely manner, under the guidance of the doctor for relevant examinations to find the cause of the disease, and actively targeted treatment.