Staying up late often can cause delayed menstruation. Women’s menstruation is affected by many factors, such as staying up late, emotional changes, environmental changes or oral medication can cause delayed menstruation. Because women often stay up late can cause endocrine imbalance, resulting in delayed menstruation, or even no menstruation. Women should pay attention to their living habits and diet, regular rest and rest time, not to stay up late, and keep a happy mood. Do not eat cold, spicy and stimulating food, and eat a nutritious diet, including seasonal fruits and vegetables. You should also do physical exercise to enhance resistance, usually pay attention to keep warm, avoid getting cold, pay attention to maintain good hygiene habits, wash your vulva every day, change your underwear regularly, etc.