Perimenopausal menstruation once every six months is normal if the amount and duration of menstruation are normal, but if the period is prolonged and dribbling, it is important to consult a doctor in time to avoid endothelial lesions. The perimenopausal period usually starts at the age of 40 and lasts for 10-15 years, until the year after the last menstrual period. Menstrual status during the menopausal transition period varies individually. It usually manifests as: 1. Prolonged menstrual cycles and decreased menstrual flow until menopause. 2. Irregular menstrual cycles with prolonged periods, increased volume and dribbling, followed by a decrease to disappearance. 3. Sudden cessation of menstruation. Perimenopausal women should adopt a healthy lifestyle, eat a healthy diet and stop smoking and drinking. They should also take calcium and vitamin D supplements to prevent osteoporosis.