Diarrhea from eating high protein foods can be a result of high protein allergy or gastroenteritis from unclean food. High protein allergy is mainly due to the high protein in the food entered into the body and treated as an invasive pathogen by the immune system, the immune system then releases a specific type of immunoglobulin E and combines with the food to produce many chemicals. It may cause allergic symptoms such as skin redness, headache, indigestion and diarrhea. When diarrhea from high-protein foods occurs, it is important to suspend consumption of high-protein foods and to treat it with medication as soon as possible. Anti-allergy treatment can be given as soon as possible through intravenous calcium gluconate. It also needs to be treated with a combination of antihistamines, commonly used antihistamines include loratadine tablets and promethazine hydrochloride. Food impurity can also lead to gastrointestinal bacterial infection occurring acute gastroenteritis, which leads to diarrhea. Patients should seek prompt medical attention and take medications such as norfloxacin and montelukast for treatment. If the patient appears to eat high protein food diarrhea, should go to the regular hospital as soon as possible, under the guidance of the doctor to use drugs.