Eating eggs and drinking milk on diarrhea may be improper diet and other physiological factors, may also be indigestion, irritable bowel syndrome, gastroenteritis, lactose intolerance and other pathological factors caused. 1. Physiological factors: eggs, milk are high-protein foods, if too much food at once, will increase the burden on the stomach and intestines, difficult to fully digest, the symptoms of diarrhea. If the eggs, milk is too cold, eating too fast, will cause stimulation of the gastrointestinal tract, may also appear to eat eggs and drink milk on diarrhea. 2. Pathological factors: mainly gastrointestinal diseases, such as dyspepsia, irritable bowel syndrome, gastroenteritis, gastrointestinal tumors, etc., may lead to gastrointestinal digestion, absorption and peristaltic function abnormalities, after eating eggs, milk, the stomach and intestines can not be completely digested, stimulate gastrointestinal peristalsis accelerated, resulting in eating eggs and drinking milk diarrhea. In addition, if the patient suffers from lactose intolerance, it will affect the digestion and absorption of lactose, so that lactose accumulates in the gastrointestinal tract, causing gastrointestinal irritation, the patient may have diarrhea when eating eggs and drinking milk. If the patient has an allergic reaction to the ingredients in eggs or milk, after eating, diarrhea may occur, manifested as diarrhea when eating eggs and drinking milk. If the patient long-term or repeated existence of eating eggs and drinking milk diarrhea, it is recommended that timely medical care, identify the cause of the disease, targeted treatment, so as not to delay the condition.