Leukemia is a malignant neoplastic disease of the hematopoietic system. Parents may wonder if nosebleeds in children can be leukemia. Actually, it is not necessarily. 1, if the child only occasionally nosebleeds, and the amount of blood is not large, there are several possibilities, the first possibility is that the child is naughty, often picking his nostrils with his hands, resulting in the destruction of the nasal mucosa in the nostrils thus leading to bleeding. The second possibility is that the child is infected with a contagious disease such as the flu and has a persistent fever, making the nasal mucosa fragile, which can also lead to nose bleeding. The third possibility is that the child’s dietary structure is not scientific, making the body nutrition is not coordinated, which will also lead to nose bleeding. 2, if the frequency of nosebleeds is too high and the amount of blood each time basically can not stop, then parents should pay attention, promptly take the child to the hospital to do a laboratory test, do a routine blood test, if the child does not have blood diseases, platelets are not abnormal, generally will not be leukemia, if these two items have, do not exclude the possibility of blood disease. Parents can also look at other aspects of their children’s illnesses, such as nosebleeds, bruises, coughs, etc. If so, please seek medical attention. In short, it is still good for parents to be aware of prevention when their children are sick.