The mood before the period is irritable and premenstrual syndrome, mental stress and so on. 1. PMS: For some women, changes in estrogen and progesterone levels before menstruation can cause irritability, insomnia, anxiety and a series of psychiatric symptoms, which belongs to the premenstrual syndrome, and the symptoms can be gradually improved after the onset of menstruation or after the cleanup. 2. Mental stress: If women recently suffered a major change or heavy work and study tasks, it may lead to endocrine disorders, resulting in irritability and other discomforts, and the symptoms are more pronounced before the onset of menstruation, this time it is necessary to actively adjust, appropriate relaxation, and, if necessary, need to be combined with psychological treatment. For women who are irritable before the onset of menstruation, it is considered to be related to the above factors, if the symptoms continue to be unrelieved, it is recommended that the patient go to the gynecology department of the regular hospital as soon as possible, to clarify the cause of the disease, and then under the guidance of the doctor to actively treat it.