Objective To explore the application effect of hospital-community-family trinity linkage transitional care based on discharge evaluation sheet for patients with coronary heart disease. Methods According to hospitalization time, 78 patients with coronary heart disease admitting to the department of cardiology from January to May 2019 were taken as a control group, who were given routine discharge assessment, discharge guidance and follow-up; and another 80 patients admitting to the department from June to October 2019 were regarded as an experimental group, who additionally received discharge readiness assessment and hospital-community-family trinity linkage transitional care according to the discharge evaluation sheet. The discharge readiness, family self-management, follow-up visit, primary health care institution visit, unplanned visit and readmission were compared between the two groups. Results The score of discharge readiness and family self-management in the experimental group were significantly higher than those in the control group (P<0.01 for both). The primary health care institution visits and planned follow-up of the experimental group were more than those of the control group, and the unplanned emergency visit and readmission were less than those of the control group. Conclusion Implementation of the hospital-community-family trinity linkage transitional care based on discharge evaluation sheet, can strengthen the hospital-community-family connection and communication, effectively improve the management of patients with coronary heart disease at home and their prognosis, reduce unplanned emergency visit and readmission, enhance primary treatment rate, and promote the hierarchical diagnosis and treatment.