Cefaclor dry suspension belongs to a class of cephalosporin antibiotics, mainly belonging to the second generation of cephalosporins, and has relatively few side effects for pediatric patients, the most common side effect being the occurrence of allergic reactions. However, if a skin test is done before taking the drug and there is no abnormality, it often rarely causes an allergic reaction. When an allergic reaction occurs, itchy skin, hives, rash or even shock can occur, which is still relatively dangerous. If it is determined that there is no allergy, the drug can be taken normally, and when taking cefaclor dry suspension, although children do not drink alcohol, if some fever symptoms appear, it is absolutely not allowed to use alcohol or diluted white wine to rub the child’s whole body skin. Even if the alcohol absorbed through the skin is very little, it can easily lead to the occurrence of disulfiram reaction, which is more dangerous. If the drug is taken in excess there will be gastrointestinal reactions, such as loss of appetite, nausea, belching and vomiting.