The invention relates to a hoisting device which comprises installation bases, supporting assemblies arranged on the installation bases and a guide rod for connecting the tops of the two supporting assemblies. A slidable sliding block is arranged on the guide rod. One installation base is provided with a winching machine. A first static pulley is arranged below one end of the guide rod, wherein the first static pulley and the base provided with the winching machine are located at the same end. The two ends of the sliding block are provided with second static pulleys. After a steel wire rope stretched out of the winching machine is sequentially wound around the tops of the first static pulley and the two second static pulleys, the tail end of the steel wire rope is fixed to the end, provided with no pulley, of the guide rod, and a dynamic pulley is arranged on the portion, between the two second static pulleys, of the steel wire rope. The dynamic pulley is provided with a hook. Compared with the prior, horizontal movement and lifting of the hook can be remotely controlled, labor is saved, and the hoisting device has the advantages of being good in firmness and stability.