The utility model provides a small -size garbage truck that is used for carrying out seamless butt joint with large garbage truck car for collect the rubbish of garbage bin and transport the car to large garbage truck, include the frame and set up the carriage on the frame, the front side in carriage forms the material loading district, and the top surface in material loading district is formed with the material loading mouth, the side in carriage corresponds the material loading mouth and is provided with automatic feeding mechanism for automatically, snatch the garbage bin and empty the rubbish in the garbage bin in the carriage by the material loading mouth, the tail end opening and the coupling in carriage have the back door, the perk that makes progress of the afterbody of the bottom plate in carriage, open when docking with the large garbage truck car at the back door in carriage, and the tail end in carriage inserts and forms seamless butt joint to the carriage of cart in and avoid rubbish to leak, effectively avoids secondary pollution.