The efficacy and indications of Pudilan Xiaoyan Oral Liquid are mainly clearing away heat and toxic materials, diminishing inflammation and reducing swelling, and it is used to treat furuncle, parotitis, pharyngitis, lymphadenitis and tonsillitis. Pudilan Xiaoyan oral liquid is a Chinese patent medicine, which is mainly composed of dandelion, Scutellaria baicalensis, Ilex kudingcha and Isatis indigotica. It has good safety, can clear away heat and toxic materials, relieve sore throat and reduce swelling, effectively relieve throat symptoms, including sore throat and dry throat, and promote the remission of the disease.