Sudden symptoms of being able to eat and easily hungry can be caused by the following reasons: First, stomach diseases, such as gastritis, gastric ulcer, which can lead to increased gastric fire, hyperphagia and hunger, and can be treated with oral omeprazole and morpholine. Second, hyperthyroidism, hyperthyroidism is mainly manifested by the ability to eat, easy to appear hunger and thinning, the main application of tabazos for treatment. Third, diabetes mellitus, the main clinical manifestations of polyphagia, polydipsia, polyuria, wasting, the symptoms of relatively light patients can be regulated from the diet, with sports, serious patients to consume hypoglycemic drugs for treatment, to do regular monitoring of blood sugar. Fourth, if a girl appears to be able to eat and easily hungry symptoms, and menstruation is delayed, it is recommended to check the human chorionic gonadotropin, there is a possibility of pregnancy.