"Long COVID"syndrome refers to the illness caused by novel coronavirus infection for more than 3 months,of which at least 2 months cannot be explained by other diseases.At present,there is no expert consensus or guidance on the treatment of"Long COVID"syndrome,and the treatment plan should integrate literature and real-world clinical practice.This paper reported a patient with"Long COVID"syndrome after percutaneous coronary intervention(PCI)who underwent cardiac rehabilitation combined with external counterpulsation,in order to provide reference for the rehabilitation treatment of such patients.