Floating on the surface of the water is usually normal if the stool is light in weight due to a recent light diet, but it is not normal if it floats on the surface of the water due to excess fat in the stool. Usually, a recent diet that is based on crude fiber and a lighter diet will cause the stool to be lighter and float on the surface of the water, and this is normal. Another reason is that there is more fat inside the stool, and the fat cannot be fully digested and absorbed, resulting in excess fat in the stool, which in the long run will cause diseases and other problems, which is usually abnormal, and the diet structure should be adjusted in time. If the symptom of floating on the surface of the water is not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, after clarifying the cause of targeted treatment.