During the treatment of fainting patients, the first step should be to ensure that the patient’s respiratory and circulatory functions are stable, with the aim of ensuring blood perfusion and oxygen delivery to vital organs and reducing or avoiding secondary functional damage to organ functions. For example, if the patient has unstable respiratory function, an artificial airway can be established for mechanical ventilation. Secondly, the patient’s past medical history and clinical examination should be used to analyze the causes of fainting and actively improve the relevant tests to further support their diagnosis. For example, in diabetic patients with fainting, blood glucose tests, head CT, electrocardiogram and other ancillary tests can be given. For patients with unclear etiology, multiple considerations should be given to avoid misdiagnosis or missed diagnosis. For patients with a clear etiology, treatment should be provided on the premise of ensuring the stability of respiratory and circulatory functions, while stabilizing the patient’s internal environment and actively treating any possible complications.