With the continuous improvement and development of modern network information technology and the continuous improvement of people's demand for healthcare, the traditional healthcare model has evolved, giving birth to a new telemedicine healthcare model. Telemedicine refers to the comprehensive application of information technology for medical information transmission and long-distance communication between different places. It integrates medicine, computer technology, and communication technology, including remote monitoring, remote diagnosis, remote consultation, remote case discussion, remote teaching, remote surgery, and a series of medical activities. With the continuous development of communication technology, telemedicine is also constantly changing. As a relatively novel technology, telemedicine has been sought after by major hospitals. With the advancement of Internet technology, digitization and informationalization have been gradually applied in telemedicine, but due to various factors, telemedicine still has great limitations. This paper summarises the development status of telemedicine; discusses in detail the development of telemedicine at home and abroad; the application of telemedicine as well as the feasibility and limitations of its promotion and development; and puts forward an outlook for the future development of telemedicine.