The utility model discloses a lifting hook preventing steel wire ropes from getting out of slots, comprising a hook head, a pulley cover and a plurality of check blocks, wherein the pulley cover is fixedly connected with the hook head, and comprises a bottom plate and two side plates; a plurality of pulleys which are parallel to each other are arranged in the pulley cover; the pulley slots of the pulleys are correspondingly and internally provided with the steel wire ropes; the check blocks are arranged in the pulley cover in a way of corresponding to the pulleys; the lower end of each check block is fixedly connected with the bottom plate of the pulley cover, and the upper end of each check block is arc-shaped; and a first gap exists between the arc top of the arc-shaped upper end of the check block and each steel wire rope, and a second gap exists between the arc-shaped upper end of the check block and a notch of the corresponding pulley slot. The lifting hook can prevent the steel wire ropes from getting out of the pulley slots effectively.