The invention discloses a portable lifting machine, and relates to the technical field of lifting equipment. The portable lifting machine comprises a lifting mechanism comprising a fixed base, a driving sliding block and a driven sliding block are in sliding fit to the upper surface of the fixed base through a first T-shaped groove and a second T-shaped groove, and the side face of the fixed baseis connected with a first box and a second box through guide columns. According to the portable lifting machine, a motor is used for driving the driving sliding block and the driven sliding block, a lifting plate is lifted by a supporting rod, and the problem that an existing manual lifting device matched with a vehicle is inconvenient to operate is solved; the fixed base is connected with the first box and the second box through the guide columns, the fixed base is supported, and the problems that an existing lifting device cannot keep balanced easily, the lifting process is not stable and inclining is prone to occurrence in the lifting process when the road condition is poor, and certain potential safety hazards exist are solved; and when not used, the portable lifting machine can be stored through matching of the first box, the second box and the fixed base, the size of the lifting machine is reduced, and the problems that an existing automatic lifting machine is large in weight andsize, and carrying is not convenient are solved.