Inclusion Criteria:  Diagnosis of coronary artery disease; Age ≤75 years old; Participated in home-based cardiac rehabilitation ≥12 weeks; Have good language skills; Volunteer to participate in this study.  Exclusion Criteria:  Have other serious acute or chronic diseases; A previous history of mental illness or a positive family history of mental illness; Have severe audio-visual or speech impairments that may affect understanding and answering questions.