The dosage of Shuanghuanglian Oral Liquid for children 4 years old needs to be reduced appropriately compared to adults. Shuang Huang Lian Oral Liquid is mainly used to relieve wind and heat, clear heat and detoxify toxins, and can be used to treat colds caused by external wind-heat, as well as fever, cough and sore throat. According to modern medical research, the drug has antibacterial and immune function-enhancing effects. However, the specific dosage for 4-year-old children still needs to be taken according to medical advice or instructions, and should not be used without authorization.