Cystic hyperplasia is a common benign breast disease in women of childbearing age. Its onset is mostly caused by endocrine hormone disorders, resulting in breast hyperplasia and incomplete degeneration. At night, the hormonal disorder is further aggravated by the excitation of the vagus nerve, which causes the clinical symptoms of cystic hyperplasia of the breast to increase, resulting in chest pain at night. If the pain is obvious, local hot compresses can be applied to the breast and oral Xiaojin Pills or Zuoyao San can be used for symptomatic treatment. If the drug treatment is ineffective and the pain is progressively aggravated, you should be alert to the possibility of cancerous changes in mammary hyperplasia nodules and go to the regular hospital for surgery in breast surgery or general surgery in time. In daily life, you should mainly eat a light diet, avoid eating too much spicy and stimulating food, and develop good work and rest habits to avoid staying up late.