With the rise of digital health, the field of medicine makes its way deep in the direction of information technology, and digital therapy has emerged in this context. Digital therapy as a digitized health management approach, it has been widely used in the field of chronic disease management in Europe and the United States, and corresponding clinical studies have been conducted in our country in recent years.This paper reviews the concept, application status, and application effect of digital therapy, and points out its problems and the direction of future research development, aiming to provide reference and reference for carrying out research related to digital therapy in our country.