The cause of nosebleeds in thin children is not necessarily the blockage of the middle Jiao, and those with severe or frequent bleeding should consult a doctor promptly to find out the cause of the bleeding. Nosebleeds are categorized as “epistaxis (nosebleed)” in traditional Chinese medicine (TCM). Traumatic epistaxis is mostly caused by bruising or hard digging; internal epistaxis is mostly caused by fire and heat, which is closely related to the lungs, stomach and liver. Heat in the lungs can be seen as epistaxis with dry nose, dry mouth and pharynx, or accompanied by body heat and bad wind, etc. Heat in the stomach can be seen as epistaxis with dry nose, bright red color of blood, and thirst for drinking, etc. Heat in the liver can be seen as epistaxis, bitter taste in the mouth, irritability, and redness in the eyes. It is recommended to consult a doctor in time to clarify the cause of epistaxis according to the child’s symptoms.