The causes of irregular menstruation are complex, diseases and lifestyle can cause irregular menstruation and should be adjusted for the cause. For patients with disease causing irregular menstruation, such as polycystic ovary syndrome, lifestyle adjustment is very important. In obese patients, weight control, along with medication, exercise and diet control, will help menstruation to return to normal after weight reaches normal level. Another example is endometrial polyp. In this case, the polyp can be removed by hysteroscopy, and menstruation will return to normal after the polyp is removed. In the case of irregular menstruation caused by endocrine disorders, hormonal drugs can be taken under the guidance of a doctor to regulate the menstruation. For irregular menstruation caused by irregular life, you should adopt a healthy lifestyle, ensure sufficient sleep, do not stay up late, healthy diet, and develop a good living habit, which will slowly improve the irregular menstruation.