Precautions for hypertension combined with coronary heart disease are as follows: 1. Self-management, develop a reasonable lifestyle, ensure proper exercise, quit smoking, low-salt, low-fat diet, ensure smooth blood flow, drink alcohol in moderation, and maintain an optimistic state of mind; 2. Learn to self-measure blood pressure and observe changes in blood pressure. Blood pressure will fluctuate with changes in environmental factors or weather changes, so the taking of antihypertensive drugs will also change due to changes in certain factors, but the drugs cannot be stopped easily. If you need to adjust your medication, you need to see a cardiovascular specialist to make a reasonable risk assessment of your blood pressure and coronary heart disease, and choose the most suitable antihypertensive medication and the dose of antihypertensive medication according to the risk factors.