Whether a child’s body temperature below 36°C is dangerous or not needs to be analyzed on a case-by-case basis. The normal body temperature of children is between 36℃ and 37.2℃, and a body temperature below 36℃ is a hypothermic state. If it is caused by more sweating after strenuous activities, swimming or taking antipyretic drugs, it is a transient hypothermia, which can gradually return to normal. If the hypothermia is pathological, it is dangerous and may lead to low immunity in children, and the resistance to external pathogens will be greatly reduced. In addition, hypothermia can slow down the energy metabolism in the body and prevent the body from providing energy properly, inhibit brain cell function, and affect the growth rate, so it needs to be taken seriously. For children with persistent hypothermia that is not relieved, parents should take them to the pediatrician for examination and symptomatic treatment. In daily life, parents should pay attention to keeping the child warm, avoiding hypothermia, enhancing nutrition, and improving immunity through appropriate activities.