The female physiological cycle is generally defined as the menstrual cycle, with the first day of bleeding being the start of the menstrual cycle and the time interval between the first day of two menstrual periods being a menstrual cycle. A normal female menstrual cycle lasts from 21-35 days, with an average of 28 days, and each period lasts from 2-8 days, with an average of about 4-6 days. However, some women may have a menstrual cycle of two or three months. Generally, as long as the menstrual cycle is regular and the volume and color of menstrual blood are normal, it is normal. Menstruation is a cyclical change in the ovaries that causes the endometrium to shed blood periodically. The age of menarche is usually between 13 and 14 years old, but some women may have it earlier or later. The menstrual cycle may change abnormally depending on the woman’s health condition, and may be shortened or lengthened, for example, to less than 21 days or more than 35 days. On the basis of the normal menstrual cycle, if the menstrual cycle changes, it is necessary to actively look for the causes and carry out effective adjustment treatment. 1, personal factors: if frequent irregular habits, often stay up late, excessive mental tension, emotional fluctuations, excessive dieting and weight loss caused by malnutrition, will affect the change of the menstrual cycle; 2, environmental factors: when women live, work environment changes, climate 3, drug factors: such as sex hormone drugs, also have an impact on the regulation of menstrual cycle; 4, disease factors: such as some endocrine system diseases caused by endocrine disorders, as well as gynecological diseases such as uterus, ovaries, fallopian tubes and other pathologies can cause changes in women’s menstrual cycle. During menstruation, there are usually no obvious symptoms, but due to the effect of prostaglandins and pelvic congestion, some women may experience a feeling of falling or pain in the abdomen or lumbosacral region, and a few women may show signs of gastrointestinal dysfunction and mild neurological manifestations. Therefore, menstruating women should pay attention to the cleanliness of the perineum, keep warm, avoid catching cold, supplement nutrition and take proper rest.