It is impossible to generalize how long you can live with diabetes complicating a heart attack. If the condition is mild and the patient adheres to the treatment under the doctor’s guidance, the survival rate is usually longer, but if the condition is neglected, sudden death may be possible. When diabetic patients suffer from heart attack, through timely treatment, and the patient’s mentality is relatively good, can improve the bad habits and dietary habits in time, the effect of blood glucose level control is more satisfactory, the patient’s survival time is relatively long, and can even reach the normal people’s standard of living. However, when some diabetic patients suffer from heart attack, they do not follow the formal requirements for treatment and keep ignoring their condition. When blood sugar continues to rise, the complications will further develop, easily causing heart failure and leading to respiratory distress. These patients may have life-threatening conditions at any time, but the specific survival rate should be analyzed in the context of individual circumstances. Diagnosed with diabetes, complications after heart attack should be timely consultation, and under the guidance of a professional physician targeted treatment, to prevent further progression of the condition caused by other complications.