According to Chinese medicine practitioners, 3-6 year old children with internal heat and fire can choose to improve their diet and medication. 1. Improve diet: In daily life, it is recommended that children eat a light diet, avoid spicy and stimulating foods, and avoid overfilling and overfeeding, so as not to aggravate the burden on the spleen and stomach, which may result in food stagnation (the accumulation of food in the stomach due to indigestion), and the development of heat (the evil qi that has stayed too long will be transformed into heat). 2. Medication: For children with internal heat and fire, according to the diagnosis, we can choose medicines with the function of clearing heat and diarrhea to regulate, such as children with lung heat, we can choose pediatric clearing lungs and transforming phlegm granules. Children’s clear lung and phlegm particles have the effect of clearing away heat and phlegm, relieving cough and asthma, and can be used for children’s cough and phlegm caused by lung-heat colds. It should be noted that children with diabetes are not allowed to take it. For children with internal heat and fire, it is recommended to go to a regular hospital for treatment under the guidance of a professional physician.