You can wash your hair after appendicitis surgery. However, you should pay attention to the use of lukewarm water, the water temperature should not be too low, and the time of washing hair should not be too long, and after washing hair, you should use hair dryer to dry your hair in time, and should not be subjected to cold wind. After blow-drying hair with a dry towel wrapped hair, pay attention to not catch a cold, because the cold may cause cough and fever. When a cough occurs, it can increase the pain of an abdominal wound or abdominal puncture hole. When a fever develops, the doctor may mistake it for a wound infection, residual infection in the abdominal cavity, or abscess formation, and go for routine blood tests, which may increase the time spent on antibiotic transfusions, increase the length of hospitalization, and even increase the overall cost of treatment.