The present invention relates to a doctor-patient interaction system based on an APP platform, comprising: an identity authentication module, a database module, a voice recognition module, an image recognition module, an APP background management application server module, a data storage management server module, a data modulation and decoding server module, and an APP mobile terminal device module. The system further includes a media push module, a diet monitoring module, a reminder module, a language communication module, a psychological consultation module and a patient communication module. The system adopts various media forms to carry out health education for patients, helps doctors and patients communicate, and help patients to understand the hospital and the work of doctors and nurses, thereby improving the patient's cooperation degree for treatment, increasing the richness of life during hospitalization, supervising the patient's treatment progress, and ensuring the rehabilitation effect.