In clinical practice, amenorrhea is an external manifestation caused by pathological and physiological changes in women's bodies, resulting from various diseases. Generally, the most typical symptom of amenorrhea is the absence of menstruation or the cessation of periods. There are many causes of amenorrhea, which may include exposure to cold, fatigue, emotional stress, bacterial infections, and disruptions in hormone secretion caused by medications or diseases. If amenorrhea occurs, it can be managed through diet by avoiding picky and unbalanced eating, and consciously increasing the intake of high-protein and high-calorie foods, which helps in hormone production and conversion, maintaining normal menstruation. Additionally, if dietary adjustments prove ineffective, it is important to seek prompt medical examination and treatment at a hospital.