If a 40-year-old woman suddenly has no menstruation, if she has a normal sexual life and does not take contraceptive measures, it is recommended to exclude the absence of menstruation caused by early pregnancy first, if it is caused by early pregnancy, no special treatment is needed. 40-year-old women who do not have menstruation due to low estrogen secretion in the body or endocrine disorders should first have a gynecological ultrasound to understand the pelvic cavity and endometrial Thickness, if necessary, can induce menstruation by oral progesterone capsules or intramuscular progesterone injection for three consecutive days. After the age of 40, the ovarian function of women gradually decreases and the level of estrogen in the body gradually decreases, when the level of estrogen is low to a certain extent, menstrual disorders or non-arrival of menstruation will occur. At the same time, it is recommended to take oral Chinese medicine to regulate the menopause and avoid entering it earlier.