Many women will have insomnia before menstruation, the main reasons are as follows: 1, may be the emergence of premenstrual syndrome. Before menstruation, the body’s hormone secretion will lead to the emergence of many abnormal symptoms, while the central nervous system will also appear changes, resulting in insomnia and other symptoms, is a normal physiological response, usually pay more attention to rest, work and rest. 2, may be usually too much pressure, mental stress, endocrine disorders and symptoms caused by the manifestation of the symptoms. Work and life will have pressure exists, when the pressure can not be released, it may cause endocrine disorders, thus producing insomnia symptoms. 3, there may be external environmental factors. Dietary factors or other factors lead to, if there is insomnia problems occurring, it is recommended to first adjust the mood, according to the body to the symptomatic treatment.