Weight Loss Via Intelligent Guidance in Patients With Coronary Heart Disease and Obesity: a Randomized Clinical Trial

Inclusion Criteria: 1. Age range: 18-65 years old . 2. History of coronary heart disease confirmed by coronary angiography or coronary CTA, showing ≥50% stenosis in at least one major coronary artery (left main coronary artery, left anterior descending artery, left circumflex artery, right coronary artery); or a definite history of myocardial infarction, or prior coronary revascularization (PCI or CABG). 3. BMI: Body Mass Index (BMI) ≥ 28 kg/m² 4. Weight loss willingness: Has the intention to lose weight 5. Smartphone proficiency: Able to use a smartphone. 6. Daily living ability: Capable of performing basic activities of daily living independently. 7. Informed consent: Voluntarily participates in the study, signs a written informed consent form, and is willing to cooperate with follow-up Exclusion Criteria: 1. Unstable angina pectoris or acute myocardial infarction occurring within the previous month; 2. Comorbid endocrine or neurological diseases, cancer, or a history of bariatric surgery that affect body weight; or long-term use of medications that impact body weight; 3. Comorbid diseases that affect exercise capacity, such as severe cardiopulmonary diseases or osteoarthritic conditions; 4. Comorbid diseases that affect diet, such as severe mental disorders, bulimia or anorexia nervosa, or cognitive dysfunction; 5. Significant liver or kidney dysfunction, defined as: glomerular filtration rate \< 60 ml/(min·1.73m²) or undergoing dialysis; alanine transaminase (ALT) or aspartate transaminase (AST) ≥ 3 times the upper limit of the normal range specified by the research center; 6. Severe language, psychological, or physical disabilities that prevent participation in the protocol; 7. Pregnant or lactating women, or individuals of childbearing potential who are unwilling/unable to use effective contraceptive measures; 8. Participation in other interventional clinical trials; 9. Body weight change exceeding 5% within the past year; 10. Patients with a habit of long-term high-intensity exercise(more than 2 sessions per week of high-intensity endurance training, or more than 3 sessions per week of moderate-intensity endurance training); 11. Patients deemed unsuitable for participation in the study by the researchers.