Very light stool, floating on the water surface is generally a normal phenomenon, can also be seen in pathological phenomena such as enteritis, intestinal flora imbalance and so on. 1. Normal phenomenon: usually if you eat more high-fiber foods, such as fruits and vegetables can lead to stool floating on the water, and dietary factors are closely related to the light stools indicate that the density of stools is relatively small. 2. Pathological phenomena: such stools are usually loose and unshaped, mostly due to enteritis, intestinal flora imbalance, dyspepsia and other causes, these conditions lead to is not normal. The stool is very light, floating water may also have other reasons, it is recommended to go to the hospital in a timely manner to improve the examination to clarify the cause of the disease, such as for pathological reasons to give targeted treatment or standardized treatment.