Hunger after eating may be related to blood, digestive tract function and thyroid hormone secretion. First, the patient’s blood has problems, the blood glucose concentration in his blood, for some reasons, is lower than normal, and then he will feel hungry all the time, when his body is in a relatively weak state and his immunity is poor. Secondly, the digestive function is not good. Once the digestive organs such as the small intestine and stomach have problems, they cannot transform the food into nutrients for the body, and then the blood sugar concentration is low and the patient feels hungry just after eating. Thirdly, it may also be related to the secretion of thyroid hormones. Excessive secretion of thyroid hormones by patients will cause them to feel hungry easily. The situation of hunger after eating may be related to the above factors. For serious patients, it is recommended to go to the hospital to identify the specific cause and treat the symptoms.