After weight loss, menstrual delay is found to indicate excessive weight loss, which should be stopped immediately, and the symptoms can be improved by strengthening nutrition and drug intervention: 1. Strengthening nutrition: If weight loss is very obvious, while menstrual volume decreases and menstruation is delayed, it may be caused by poor nutrition affecting the central nervous system, resulting in lower gonadotropin secretion. At this time, we must resume normal diet, reasonably strengthen nutrition, eat more food rich in high protein and vitamins, such as eggs, beef, milk, yam, wolfberries, etc., gradually restore weight, restore normal hormone levels; 2. If the luteinizing hormone and folliculopoietin levels are found to be low, the patient should follow the doctor’s prescription to apply fenomorphin for cyclical conditioning, and stop using the medication after the six hormone tests return to normal. Excessive weight loss can reduce nutrients in the body and lead to endocrine dysfunction, which can interfere with the hormone secretion function of the ovaries and cause delayed menstruation or even amenorrhea, which can also have a great impact on fertility. Therefore, weight loss should pay attention to reasonable and healthy weight loss so as not to affect the health of the body.