The treatment of β-hemolytic streptococcal infections with Clohexine dry mix suspension should be at least 10 days, and the use for other infections should be based on different situations, such as the degree of infection and symptoms, which cannot be generalized. Clohexine dry suspension is an oral compound preparation containing cefaclor and bromhexine, mainly used for the treatment of respiratory tract infections caused by sensitive bacteria, with sticky sputum that cannot be easily coughed up. Because it contains antibacterial drugs, it is a prescription drug and should only be used under the guidance of a doctor’s prescription or medical advice before using it. The doctor will guide the dosage, frequency and duration of use according to the infection. Patients can check the drug instructions to understand the precautions, dosage and contraindications of the drug. If any discomfort occurs during the medication period, such as worsening of symptoms or the appearance of new bad symptoms, make sure to go to the hospital for review and follow-up in a timely manner. Parents should note that cefaclor is an antibiotic and should be used with caution if the baby is allergic to penicillins, penicillin derivatives, penicillamine and cephalexin. The efficacy of antibacterial drugs depends on the effective blood concentration, and the course of use should be sufficient. If the effective blood concentration is not reached, it will not only fail to kill the bacteria completely, but also make the bacteria resistant to the drug.