The invention discloses a novel special smart small electric cucurbit device for buildings. The device comprises a box body, slot holes are arranged in two sides of the bottom of the box body, first hydraulic rods are fixedly connected with the front end and the rear end of two sides of the top of the inner chamber of the box body, the bottoms of the first hydraulic rods penetrate through the bottom of the box body and extend to the external of the box body, the bottoms of the first hydraulic rods are movably connected with roller wheels through rotating shafts, slide rails are fixedly connected between the front end and the rear end of the bottom of the box body and between the first hydraulic rods, slide plates are arranged between the two slide rails in a sliding connection manner, andthe bottom of the inner chamber of the box body is fixedly connected with a motor. The first hydraulic rods contact to drive the roller wheels to stretch into the inner chamber of the box body, so theslide plate is in direct contact with the ground, the contact area of a hoisting device and the ground is increased, and the hoisting device is well supported, thereby the hoisting device is stable during working, and can well hoist weights.