Abstract: We used the network pharmacology to explore the active ingredients and mechanism of action of Danqi tablets in the treatment of coronary heart disease, providing a theoretical basis for the treatment of clinical coronary heart disease. The TCMSP database was used to screen for active ingredients and targets in Danqi tablets; the predicted targets of coronary heart disease were screened through the GeneCards database; then, the intersection of the two targets was mapped; we used STRING database to construct a protein interaction network map and identified 65 cores targets; then, the DAVID database was used for enrichment analysis of gene ontology (GO) biological processes and KEGG signaling pathways, and finally the Cytoscape-3.6.2 software was used to construct a network diagram of traditional Chinese medicine-active ingredient-key targets-pathway. The H₂O₂-induced H9C2 cells injury model was used for experimental verification. The results suggest that Danqi tablets act on inflammatory factors and apoptosis-related pathways through quercetin, luteolin, tanshinone ⅡA, and other active ingredients, and improve proinflammatory or anti-inflammatory imbalances in the body and protect cardiomyocytes. This study confirms the multi-component and multi-target effects of Danqi tablets in the treatment of coronary heart disease, and provides an objective basis for their use in further experimental research and the clinical diagnosis and treatment of coronary heart disease.