Blood fever, also known as blood division (which is the deepest stage or disease site among the four periods of Wei Qi and Ying Blood in warm diseases) fever, refers to those whose heat has entered the blood division. If a child develops symptoms related to heat in the blood, he or she needs to seek medical attention in a timely manner and be treated under the guidance of a medical professional. The common symptoms of heat in the blood include high fever, headache, red face, thick breath, sweating, thirst, dizziness, delirium, rash, red or reddish tongue, yellow moss, and large pulse. It can be treated by clearing the qi and cooling the camp under the guidance of professional physicians, and commonly used formulas such as clearing the plague and defeating the toxin drink. It is composed of gypsum, raw earth, yellow rhizome, gardenia, scutellaria, etc. It has the efficacy of clearing heat and removing toxins (removing heat and toxins in the body), cooling the blood and diarrhea. It can be used for treating the symptoms of warm epidemic and heat-poisoning, and the symptoms of qi and blood burnt out (the evil heat in the outside has not been relieved but continues to develop inwardly). Do not overdose. Do not overdose. Do not take if there is deficiency of Yin and fever. Children with symptoms related to heat entering the blood should avoid spicy, deep-fried and pungent foods to avoid aggravation of the condition. If the above symptoms occur, please consult a doctor in time, identify the cause under the guidance of the doctor, standardize the treatment, do not self-medication.