Shortness of breath may indicate a variety of cardiopulmonary diseases and should not be taken lightly. Once shortness of breath occurs, the nature of the symptoms must first be clarified. Physiological shortness of breath is the most common. Under normal circumstances, there will be shortness of breath and panic after strenuous exercise. As long as a few moments of rest can be relieved, this situation belongs to the physiological shortness of breath. Physiological shortness of breath usually has no other accompanying symptoms. Shortness of breath accompanied by coughing and coughing up sputum often indicates lung disease. Shortness of breath is a premonitory manifestation of chronic diseases such as lung cancer and pleural effusion, while gradually increasing shortness of breath is also an important sign of the severity of emphysema. For example, if you used to be able to climb three floors, but now you are out of breath when you climb two floors, this means that shortness of breath has increased and you should seek medical attention in time. Shortness of breath with angina may be coronary artery disease. Heart disease (coronary artery disease) is also an important cause of shortness of breath. Shortness of breath due to heart disease usually occurs after overexertion and emotional stress, and is also accompanied by anterior heart discomfort. If you have symptoms of shortness of breath for a long time and have a history of angina pectoris or myocardial infarction, you need to consider serious diseases such as heart failure. It is more important to go to the hospital early to avoid delaying the treatment. When shortness of breath occurs, first try to quiet the patient, you can gently touch the patient’s chest, and then drink a glass of warm water; patients with shortness of breath often open their mouths to breathe air, so the tracheal mucosa is easy to dry, a cup of hot water can be used to let the patient inhale hot steam to moisten the airway mucosa. Daily, we should open the windows regularly, pay attention to hygiene, and strengthen exercise to enhance immunity.