If a three-year-old child has fever and convulsions, most of them are caused by high fever and convulsions, they can be treated in the following ways: 1. The airway needs to be kept open, the child’s collar needs to be untied, the child’s head needs to be tilted back, and the child’s head needs to be tilted to the side to avoid the phenomenon of accidental aspiration due to secretions in the mouth or vomit in the stomach. 2. 3. After the symptoms of convulsions are relieved, parents should promptly send the child to a regular hospital for further examination to clarify the cause and then carry out the corresponding treatment.