To analyze the medication regularity of traditional Chinese medicine(TCM) external treatment of viral pneumonia to provide a basis for the screening and rational formulation of new formulas for Coronavirus Disease 2019(COVID-19).Methods:Research articles in clinical journals，conferences，and dissertations on the prevention of viral pneumonia with external treatment of TCM were retrieved from CNKI，CBM，CSPD，CCD，EMBASE(embase.com)，and PubMed from database inception to February 2020 with subject terms.TCM intervention protocols for COVID-19 involving prevention formulas of TCM external treatment published by local authorities，National Health Commission，National Administration of Traditional Chinese Medicine，TCM hospitals，academic schools，and prestigious doctors from December 31，2019，to February 18，2020，were collected to establish a database for the prevention of viral pneumonia by TCM external treatment.The data were analyzed by descriptive statistics，association analysis，and cluster analysis.Results:The top high-frequency drugs used for the prevention of viral pneumonia in TCM external treatment were Pogostemonis Herba，Artemisiae Argyi Folium，Atractylodis Rhizoma，Borneolum Syntheticum，Eupatorii Herba，Kaempferiae Rhizoma，Menthae Haplocalycis Herba，Cinnamomi Cortex，Schizonepetae Herba，Realgar，Angelicae Dahuricae Radix，Saposhnikoviae Radix，Lonicerae Japonicae Flos，and Foeniculif Fructus in sequence.The drug combination with the strongest correlation was Pogostemonis Herba and Artemisiae Argyi Folium.As revealed by cluster analysis，high-frequency drugs were divided into two categories.Conclusion:TCM external treatment is advantageous in the prevention of viral pneumonia，which is mainly dominated by the therapeutic principles of dispelling filth，removing dampness，releasing exterior，and clearing heat.