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Objective: To explore the molecular mechanism of buzhong yiqi decoction in the treatment of senile functional constipation based on network pharmacology. Methods: Chemical compositions and selected targets related to the eight traditional Chinese medicine herbs were searched through the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP).Through GeneCards database and OMIM database, disease targets of senile functional constipation were searched. R language was used to screen the common targets between drugs and disease, and then the interaction network diagram of the targets was constructed by String.Cytoscape3.7.0 was applied to construct the traditional Chinese medicines-chemical compositions-disease targets network.GO enrichment analysis and KEGG enrichment analysis of the targets were based on DAVID. Results: Five main chemical compositions including quercetin, kaempferol, nobiletin, naringenin and formononetin were screened, and five key targets including PTGS2, ESR1, AR, NOS2 and PPARG were identified.622 GO functional entries and 125 pathways were yielded by gene enrichment analysis. Conclusion: Buzhong yiqi decoction may play the role of anti-inflammatory and anti-oxidation through multi-component, multi-target and multi-channel, so as to improve senile functional constipation.