Heart failure with preserved ejection function is generally more difficult to recover on its own and requires aggressive etiologic treatment. Heart failure with preserved ejection function generally refers to diastolic heart failure, i.e., diastolic dysfunction of the heart, while the systolic function is still normal. It is generally caused by pathological factors, such as coronary artery disease myocardial ischemia, calcium pump dysfunction, and cardiac active diastolic dysfunction; hypertension, hypertrophic cardiomyopathy and other causes of myocardial hypertrophy, myocardial compliance and filling disorders, so it is generally more difficult to self-recovery. When heart failure with preserved ejection function occurs, etiological treatment should be actively carried out to prevent further aggravation of heart failure, such as relieving myocardial ischemia, controlling blood pressure, inhibiting myocardial remodeling, and relieving outflow tract obstruction. It is recommended to go to the hospital in time to clarify the etiology of heart failure and carry out targeted treatment.