Irregular menstruation can lead to infertility. The most common cause of female infertility is anovulation, and menstrual irregularity is the most common cause of anovulation, but the cause of infertility is more complex, and timely hospitalization is recommended for clarification. Irregular menstruation refers to abnormal changes in menstrual cycle, volume and color, as well as uncomfortable symptoms accompanying menstruation. Irregular menstruation is mostly related to endocrine system disorders, long-term irregular menstruation will affect ovulation, which in turn affects the normal conception of women. For example, in polycystic ovary syndrome, clinical manifestations include scanty menstruation, amenorrhea, and dysfunctional uterine bleeding, and women may experience scanty ovulation or even no ovulation, which may lead to difficulty in conception or even infertility. In addition, if premature ovarian failure, endometritis, uterine fibroids, ovarian cysts, endometrial polyps and other diseases lead to irregular menstruation and affect normal ovulation, all may lead to infertility. Therefore, if a woman has irregular menstruation, she should go to the gynecology department in time, do gynecological ultrasound and hormone six in order to clarify the cause of the disease, and then treat the symptoms in time.