Qualification certificate issued by medical association or organization. Interventional qualification certificate refers to the qualification certificate issued by relevant medical associations or organizations after cardiovascular physicians have completed relevant specialist training, obtained necessary academic qualifications and passed clinical practice. Intervention is a medical concept, which refers to a minimally invasive treatment method that introduces medical instruments into human tissues and detects the development process of lesions through corresponding medical equipment. Interventional therapy originated from interventional radiology, which is the expansion and extension of medical radiology in the field of disease treatment.