There are many clinical reasons for menstrual discontinuity, excluding pregnancy, but the most common are the following: First, patients have endocrine disorders that cause menstrual discontinuity, such as ovarian hypofunction, polycystic ovary syndrome, hyperprolactinemia, hyperandrogenemia, hypothyroidism, etc. These endocrine disorders can cause menstrual discontinuity. These endocrine disorders can lead to menstrual discontinuity and need to be clearly diagnosed by examining sex hormone six, anti-Mullerian duct antibodies, thyroid function, etc. Second, the patient has endometrial damage or adhesions leading to menstrual arrest. Women who have uterine operations, such as abortion, scraping and other uterine operations, or have serious endometrial inflammation, can cause damage to the endometrium, and after the damage is repaired, adhesions may occur, which may also affect the menstrual flow and lead to menstrual arrest.