The present invention discloses a medical diagnosis robot system. The system comprises a voice system module, an image processing system module, an image recognition detection system module and a medical knowledge base cloud service system module. The voice system module is used for collecting language information of a patient that needs to be diagnosed; the image recognition detection system module is connected with the image processing system module; and the medical knowledge base cloud service system module is connected with the voice system module and the image recognition detection system module respectively, and is used for storing the preset medical knowledge base, selecting corresponding diagnostic data in the medical knowledge base, and sending the data to the user. According to the medical diagnosis robot system disclosed by the present invention, diagnosis can be accurately performed on the disease and etiology of the patient, an ideal diagnosis and treatment plan can be provided for the patient, valuable treatment time of the patient can be saved, the patient can be ensured to be treated in time, the urgent need of the patient for medical diagnosis can be satisfied, and quality of life for people can be improved.