First aid for heart attack has the following aspects: 1. Get help and call 120, because a real heart attack can not be relieved by normal medicines or methods, and going to the hospital as soon as possible is the best solution, none of them. If there is no one else at home to help, call 120 first and then open the door for the first aiders to administer help. If you just feel that there is a possibility of heart attack, such as chest tightness and chest pain that lasts for more than 15 minutes and cannot be relieved by medication, you should call 120 emergency immediately and inform your family’s contact information; 2. Control your emotions and reduce your activities. Emotional and physical activities will increase the heart’s oxygen consumption and aggravate the condition. So breathing heavily, coughing and other behaviors are definitely not right. The right way is to immediately lie down to rest or sit down in a place of support, and then call others to assist, restrain tension. Can be appropriate to do slow deep breathing, the speed should not be too fast, otherwise it will cause hyperventilation, generally 5 seconds 1 time is appropriate; 3, other treatment. If there are conditions, oxygen is a better choice. Oxygen inhalation can improve the oxygen supply to the myocardium, and the symptoms may be relieved accordingly.