The 70-year-old elderly menstruation is mostly considered as abnormal vaginal bleeding, which is considered to be related to vaginitis, cervical lesions, malignant tumors and so on. 1. Vaginitis: for 70-year-olds, due to the lack of estrogen protection, so the local vaginal resistance is relatively low, which can easily lead to the propagation of pathogenic bacteria and vaginitis, and at the same time, due to the local tissue atrophy and thinning, vascular permeability increases the appearance of a small amount of vaginal bleeding. 2. Cervical lesions: if the patient has cervical lesions, the local tissues are infected with human papillomavirus, some patients will have abnormal leukorrhea, contact bleeding, small amount of vaginal bleeding and other clinical symptoms. 3. Malignant tumor: for postmenopausal women, due to the change of hormone level in the body, endometrial cancer should be ruled out firstly for patients with irregular vaginal bleeding. For patients who have menstrual vaginal bleeding at the age of 70, it is recommended to go to the gynecology department of the hospital in time to improve the ultrasound, cervical cancer screening and other related examinations, so as to clarify the cause of the disease and then actively treat it under the guidance of the doctor.