The tests to be done for dyspnea and chest tightness and shortness of breath include electrocardiogram, cardiac ultrasound, chest CT examination, pulmonary function test, arterial blood gas analysis and so on. 1. Electrocardiogram: Electrocardiogram can observe the blood supply of the heart and rule out arrhythmia causing chest tightness and shortness of breath. 2. Cardiac ultrasound: it can observe the structure and function of the heart, and all kinds of organic heart disease can be identified by cardiac ultrasound, and it can also measure the ejection fraction of the heart to determine whether there is any cardiac insufficiency. 3. Chest CT examination: mainly to determine whether there are respiratory diseases, including lung inflammation, pneumothorax, pleurisy and so on. These diseases can cause chest tightness, shortness of breath and dyspnea. 4. Lung function test: some asthma patients have insidious symptoms, which only manifest as chest tightness and shortness of breath, this is more insidious, you can consider arranging a lung function test. 5. Arterial blood gas analysis: after the exclusion of organic lesions, we should also consider the cardiac cause, if the patient is nervous, or even feel weak, numbness of the hands and feet, we should consider the cause of hyperventilation, too much carbon dioxide exhalation, we can give arterial blood gas examination. If you have any discomfort symptoms, you need to go to the hospital as soon as possible, by the doctor according to the specific conditions, to formulate individualized diagnosis and treatment plan, so as not to delay the condition.