Shuang Huang Lian Oral Liquid has no antiviral effect. Some drugs such as oseltamivir have antiviral effects; interferon also has antiviral effects. However, the ingredients of Shuanghuanglian Oral Liquid are relatively clear, mainly including Jin Yinhua, Scutellaria baicalensis and Lianxiao, etc. Its main function is to remove the wind and detoxify the surface, clear heat and detoxify the toxin, which can be used for cold caused by external cold and wind-heat, mainly for symptomatic treatment of fever, cough and sore throat. If the upper respiratory tract infection is caused by a virus, it generally has a certain self-healing nature and can be cured in about 7 days even without treatment. The main reason for using drugs such as Shuanghuanglian Oral Liquid is that it can reduce pain, relieve symptoms and recover a little faster, but it will not play an anti-viral role, and killing the virus mainly depends on your own immunity. For the prevention of new pneumonia, the main thing is not to contact the source of infection and to seek medical attention as soon as symptoms appear.