In clinical work, when a patient is found to have suspected acute myocardial infarction, making the patient lie down is the earliest and important treatment measure. The main mechanism is that the excitability of sympathetic nerves decreases, the patient’s blood pressure decreases and the heart rate slows down, which can lead to a decrease in myocardial oxygen consumption, which is extremely beneficial to acute myocardial infarction. However, this is only a unilateral view of the treatment of acute myocardial infarction from the perspective of a physician. Philosophically speaking, differences in perception can occur when looking at the problem from different perspectives and with different objects. For a patient with acute myocardial infarction, the beginning node of treatment given to the patient by the doctor starts with oxygenation. The patient will never consider that the doctor makes him lie down to, as a therapeutic measure. In the patient’s eyes, the oxygen tube handed to him by the health care provider is a lifesaver. At this point, the patient feels that the doctor is starting to treat him, and after the oxygen intake, the patient’s anxiety state and sympathetic excitability may be significantly relieved. Therefore, in the eyes of the patient, oxygen is the beginning of the treatment of acute myocardial infarction. Sometimes in dealing with some medical disputes, patients also always take oxygen as the beginning node of treatment. Is oxygen administration really so important? If there are no obvious complications in acute myocardial infarction and blood is collected from patients for blood gas analysis, the result is that most patients have normal blood gas analysis results and the patients are not hypoxic. Still, clinicians have noticed that dyspnea, anxiety, and even pain are rapidly relieved after oxygen administration, mainly as a result of the comforting effect. And no harmful effects of oxygen administration in small doses have been found, and some data also show that it can improve myocardial function and relieve anxiety and pain, so oxygen administration should be routinely used in acute myocardial infarction. In conclusion, the administration of oxygen therapy to acute myocardial infarction without hypoxia is some psychological influence at work, which is still beneficial to the patient. This suggests that in clinical work, some therapeutic measures may not work at all, but have a comforting effect, and the latter is also important. In other words, it is also important to master the psychology of the patient; an oxygen tube may be ineffective, but may significantly improve patient satisfaction. If the patient’s interests are taken into account, the clinician must learn to see things from the patient’s point of view.