The fact that menstruation occurs one week earlier every month generally means that menstruation occurs one week earlier every month, which is a normal phenomenon, and may be affected by factors such as improper diet, bad living habits, and emotional abnormalities. 1. Improper diet: Usually, patients usually have poor dietary habits, in order to maintain a good figure, often diet or often eat spicy and stimulating food, which may also lead to menstruation a week earlier. 2. Poor living habits: patients usually have poor living habits, often stay up late, resulting in physical fatigue, or smoking, alcoholism and other bad habits, will lead to the body’s various functions, easy to trigger endocrine disorders, resulting in menstrual disorders. 3. Emotional abnormalities: If the patient usually life and work pressure is large, there is a long time tension, depression, restlessness and other abnormal emotions, or suffered a major event of mental frustration and trauma, easy to the hypothalamus and pituitary function, can also induce endocrine dysfunction, menstrual disorders phenomenon. It is recommended that women develop good dietary and living habits, and pay attention to the combination of work and rest, so as to avoid abnormal menstruation.