Sudden heart discomfort, must find the cause, the treatment of disease first corresponding to the treatment of the cause, corresponding to the treatment, as follows: 1, the scene let the patient immediately sit or lie down, can reduce the burden on the heart; 2, vital signs, such as blood pressure, heartbeat, to protect the stability of vital signs; 3, the cause of treatment, if the patient previously had coronary heart disease, frequent episodes of chest tightness, chest pain, it is recommended that sublingual tongue nitroglycerin observation for five minutes, if the chest pain does not ease after five minutes, sublingual tongue nitroglycerin observation for five minutes. If the chest pain is not relieved after five minutes, sublingual nitroglycerin and then a nitroglycerin observation for five minutes, if still not relieved can be taken again, three nitroglycerin containing chest pain is not relieved, rushed to the hospital. Generally observe two invalid will be sent to the hospital. But with nitroglycerin must pay attention to blood pressure, such as systolic blood pressure less than 100mmHg, containing nitroglycerin is more dangerous, because nitroglycerin can make the coronary arteries dilate, improve the blood supply to the heart, but also cause a drop in blood pressure. If your blood pressure is low, nitroglycerin will make your blood pressure even lower and aggravate the disease. Therefore, it is more prudent to contain heart pills or heart protection pills. In the event that it is impossible to determine the blood pressure level, heart pills or heart protection pills are relatively prudent.