Inclusion Criteria:  -  1. Patients with angina pectoris who have evidence of coronary angiography or coronary computed tomography angiography (CTA) performed within 1 year and meet any of the following requirements:  Imaging examination shows ≥ 50% stenosis and with typical or atypical angina symptoms; Imaging examination shows < 50% stenosis; with typical or similar angina symptoms, and the treadmill exercise test or stress echocardiography or radionuclide stress test results are positive; Post-PCI stenosis of left vessels is ≥ 50%; 2. Currently taking or judged by the physicians as suitable to taking at least one oral antianginal drug (e.g., beta-blockers, nitrates, calcium antagonists and potassium channel openers); 3. Have basic reading and writing abilities, and can correctly fill in the Seattle Angina Questionnaire(SAQ) after being trained by the investigator; 4. Able to use smart phones; 5. Voluntarily participate in the study and sign the informed consent form.  Exclusion Criteria:  Have been diagnosed with malignant tumors that seriously threaten survival and have expected survival time of less than 1 year; Have participated in other clinical studies within the past 1 month; With poor compliance or with other conditions unsuitable for this study as assessed by physicians.