A negative fecal occult blood means that there are no red blood cells in the stool and is a part of the routine stool examination. If there is blood in the stool and the amount of bleeding is 5ml or more, the stool is positive for occult blood. A negative fecal occult blood means there is no gastrointestinal bleeding, inflammation or other diseases. If the stool is negative for occult blood and the color and shape of the stool are normal, it means that the body is healthy. If the stool is dry, we should prevent constipation, in order to maintain normal bowel movements, we should pay more attention to the diet, eat less spicy, stimulating, greasy food, eat more light, easy to digest food, can eat food that helps laxative, such as bananas, apples, kiwi, dragon fruit, etc. Normal stool is yellow and soft, if the stool changes may be caused by disease, you need to timely stool routine examination.