Taking the electronic pet as the starting point, the facade of the "little ha" is used as a display screen to interact with the owner through various expression patterns. 'Little ha' will also express its own state through different expressions. In the design of reference market small refrigerator basic function as well as commonly used environment and man-machine relationship." Small ha' adds the function of battery to realize the function of long-term cold preservation after power failure. The design of the handle makes it more convenient to adapt to scenes that need to be moved frequently in the dormitory and outdoors. On the design of CMF, the retro color with low saturation and orange embellishment make "little ha" more beautiful.