Children who are suddenly covered with a lot of blankets and still feel cold may have chills caused by malaria, sepsis and colds. 1. Malaria: When children are infected by Plasmodium, they will have chills and high fever, accompanied by sweating and generalized pain. 2. Septicemia: When children are infected by bacteria, the bacteria and their metabolites enter the bloodstream and cause sepsis, there will be sweating and chills, as well as nausea and vomiting and other gastrointestinal reactions. 3. Cold: when the child is cold, it may lead to fever, there will be a shift in body temperature regulation point, but also lead to vascular constriction of the skin, and then there is a decrease in skin temperature, there will be children’s chills, chills. When children have chills, parents should consult a doctor and follow the doctor’s instructions to reduce fever, and rehydration supportive therapy, in addition to the cause of the treatment.