After heart bypass surgery, you should eat a scientific diet with more fruits and vegetables and less food containing saturated fatty acids. After heart bypass surgery, you should have a scientific diet, and you should ensure that you eat the right amount of fruits and vegetables, such as apples, bananas, tomatoes, celery, etc. You should eat more foods with high protein content, such as fish and eggs, and foods containing unsaturated fatty acids, such as corn oil, olive oil, sunflower oil, etc., and less foods with high content of saturated fatty acids, such as animal oils and creams, etc. You should also avoid drinking alcohol after surgery. In addition, it is best not to drink alcohol after surgery. Smoking is an important risk factor for heart disease, so smoking should be strictly prohibited, and you also need to pay attention to rest in your normal life, avoid exertion, and you can also consult your doctor for dietary guidance. After the operation, you also need to take medication regularly, when chest tightness and other uncomfortable symptoms occur, you should go to the hospital in time, and under the guidance of the doctor for treatment.