Diarrhea rotten egg smell indicates the following reasons: 1, after eating too much protein and fatty food, more ammonia produced after pulling out this odor; 2, the lack of digestive enzymes, the intake of protein can not be well decomposed, there is hypertonic intestinal contents in the colon to absorb a lot of water diarrhea, undigested food in the colon bacterial decomposition will also produce this situation; 3, the colon flora Disorders and the emergence of long-term unreasonable use of antibiotics, bacteria on the intestinal contents of the decomposition of the ability to decline, resulting in undigested food is not timely digested to the body to produce rotten egg smell. This situation appears to reasonable diet, eat more fiber food, high protein and greasy food moderate control.