Melatonin is a substance secreted by the brain that can directly affect a woman’s normal sleep. Although it does not have a direct effect on the menstrual cycle, it can affect normal menstruation by regulating a woman’s sleep status. Many hormones are secreted at night, and as women secrete less melatonin as they age, it can affect the quality of their normal sleep. Poor sleep at night can disrupt hormone levels, which can affect the menstrual cycle and lead to menstrual cycle disruption. This can be changed through behavior to improve sleep. For example, you can usually take proper physical exercise, which helps women to sleep. In addition, you can also soak your feet in hot water before going to sleep to promote blood circulation throughout the body, and then pat the Yongquan point and massage the soles of the feet, which can also improve sleep and prevent the melatonin level in the body from decreasing due to poor sleep, which affects the normal menstrual cycle of women.