If symptoms such as rapid heartbeat and shortness of breath occur after a short walk, the problem needs to be analyzed on a person-by-person basis and according to different groups of people. From the adult perspective, heart failure, cardiac insufficiency resulting in panic, shortness of breath and chest discomfort need to be considered. Heart failure is highly suspected if the symptoms can be relieved after a change in position, rest, or taking diuretics. If the test results support the diagnosis of heart failure, diuretics and vasodilators may be used to control the patient’s symptoms. There is also a case of pulmonary disease that can lead to shortness of breath and chest discomfort, which is mostly seen in diseases such as pulmonary atelectasis, wheezing bronchitis, asthma attacks and pleural effusion, etc. In this case, patients need to undergo chest CT, pulmonary function tests, blood gas analysis and other tests to clarify the diagnosis. After the symptomatic treatment and removal of the cause, the patient’s symptoms can be well relieved. For people with particularly low exercise tolerance, symptoms may occur after exercise if they are less active in general. For these people, the amount of exercise should be increased to improve lung capacity and increase exercise tolerance to relieve symptoms.