Objective:To investigate the medication rule and mechanism of action for heart failure with preserved ejection fraction(HFPEF)based on data mining and network pharmacology.Methods:CNKI was searched for articles on traditional Chinese medicine(TCM)treatment of HFPEF published from January 31,2003 to December 31,2022.Traditional Chinese Medicine Inheritance Support System V2.50 was used for medication rule analysis,and network pharmacology was performed for core drugs.Results:A total of 112 valid prescriptions were obtained by data mining,involvi...