A small carrier with functions of flat ground transportation, stair climbing and goods lifting belongs to the technical field of goods carrying equipment, and is used for carrying goods. The technical scheme of the small carrier is that the small carrier comprises a stair climbing part, a flat ground traveling part and a lifting part, the three parts can respectively complete different functions such as stair climbing, ground traveling and goods lifting, and switching can be carried out among the three parts according to requirements in the process of use. The stair climbing part adopts a triangular wheel structure, and performs stair climbing operation through the triangular wheel driven by a motor and a gear; the motor and the gear drive a traveling wheel to make the flat ground traveling part travel; and the lifting part can lift goods via an electric push rod, and can conveniently load and unload the goods via a front fork and an angle fixing device. The small carrier is initiated specific to goods transporting devices, solves the problem of transporting big pieces of goods up and down in a low-rise building, alleviates the labor intensity of logistics delivery personnel greatly, improves the work efficiency of logistic transportation, and thus has obvious economic and social benefits.