Background:Network pharmacology was used to explore the mechanism of the Chinese patent medicine Reduning injection in the treatment of corona virus disease 2019.Methods:The chemical constituents and targets of Qinghao(Artemisiae annuae herba),Jinyinhua(Lonicerae japonicae flos),Zhizi(Gardeniae fructus)in the Chinese patent medicine Reduning injection were obtained from Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,and the target related to corona virus disease 2019 was searched in GeneCards database,then perform Venn analysis on the targets of corona virus disease 2019 and the Chinese patent medicine Reduning injection,to screen the compounds and targets of the Chinese patent medicine Reduning injection in the treatment of corona virus disease 2019.The String platform was used to construct the protein-protein interaction network,and key targets were screened.Cytoscape 3.5.1 was used to construct the active traditional Chinese medicine-chemical composition-target-disease network to screen the key active components,and the gene ontology function and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis were performed on the common target through DAVID(6.8)online analysis data tool to predict the mechanism of action.Results:Fifty-two active ingredients and 232 targets were selected from the Chinese patent medicine Reduning injection,including 44 targets related to corona virus disease 2019.A total of 310 gene ontology biological processes and 94 Kyoto Encyclopedia of Genes and Genomes signaling pathways were obtained,which were mainly involved in inflammation,viral infection,bacterial infection,immune response and substance metabolism,et al.Conclusion:The mechanism of the Chinese patent medicine Reduning injection in the treatment of corona virus disease 2019 may be related to antivirus,bacteriostasis,anti-inflammatory and antifebrile,immune regulation and metabolism regulation,et al.