The invention discloses a small crane, comprising a base, wherein the base is provided with a supporting arm, the upper end of the supporting arm is provided with a suspension arm, the middle part of the suspension arm is articulated with the supporting arm, the rear end of the suspension arm is provided with a draw arm, the upper part of the draw arm is articulated with the rear end of the suspension arm, the lower part of the supporting arm is provided with a lever, the middle part of the lever is articulated with the supporting arm, the rear end of the lever is articulated with the lower end of the draw arm, the front end of the lever is provided with a roller, the base is provided with a guide rail, the upper surface of the guide rail is a cambered surface, and the cambered surface ofthe guide rail is matched with the roller; and the front end of the suspension arm is provided with a first pulley, the supporting arm or the draw arm is provided with a rotary drum, the rotary drum is arranged at the lower part of the draw arm or the supporting arm, the draw arm or the supporting arm is provided with a second pulley which is arranged on the draw arm or the supporting arm together with the rotary drum, the second pulley is arranged above the rotary drum and poisoned on a articulation part between the draw arm and the suspension arm or between the supporting arm and the suspension arm, the rotary drum is provided with a suspension rope, and one end of the suspension rope sequentially rounds the second pulley and the first pulley for installing of a lifting hook.