Whether a child’s 35 ℃ hypothermia is dangerous needs to be analyzed on a case-by-case basis and cannot be generalized. If a child’s body temperature of 35℃ is caused by improper warmth, too little clothing, or more sweating after strenuous activities, or taking antipyretic drugs, it is often a transient hypothermia, which can gradually return to normal after controlling the above factors, and is generally not dangerous. However, if there are certain diseases, such as diarrhea, metabolic disorders, severe infections, acidosis, etc., which can lead to low immunity in children, pathological hypothermia may occur, which is dangerous. For children with persistent hypothermia that is not relieved, it is recommended that they be seen by a pediatrician in a timely manner. Hypothermia can slow down the body’s energy metabolism, which is not conducive to normal energy supply, and the growth and development of children can be affected. Children with hypothermia should pay attention to warmth, diet and nutrition, appropriate amount of water and appropriate activities in daily life, which will help to improve the metabolic rate of the body.