Happy medical treatment" is a new idea of the hospital. On the one hand, it stresses that the hospital should strive to reduce the pain and increase the happiness of patients; on the other hand, it pursues the goal of medical personnel working happily and enjoying happiness in their work. The creation of the idea of "happy medical treatment" results inevitably from the increasingly intensifying competition in the medical market and from the constantly rising expected value on the part of consumers. By explaining the connotations of the idea of "happy medical treatment", the paper sets forth the basic principles for the hospital to develop the new idea: permeability, systematicness and continuity. An in-depth analysis on these principles is offered.