The utility model relates to a high building life saving hoist which comprises a shell body, a box cover, a falling safety rope, a winding wheel, a left handle and a right handle. The utility model is characterized in that the winding wheel is fixedly connected with contracting brake wheels arranged on both sides, and the peripheries of the contracting brake wheels arranged on both sides are respectively assembled with a left hand contracting brake belt and a right hand contracting brake belt. A braking grab handle and an expanding grab handle are respectively hinged in the left handle and the right handle. The front end of the braking grab handle is hinged with one end of the left hand contracting brake belt, the other end of which is fixed on the box cover. The lower end of the shell body is hinged with two pressing plates, wherein the back surface of one pressing plate is connected with the braking grab handle by a hinged hanger rod and the back surface of the other pressing plate is connected with one end of the right hand contracting brake belt by a hinged hanger rod. The other end of the right hand contracting brake belt is fixed on the shell body. The opposite surfaces of the two pressing plates are connected with a through ring of a safety belt by a flexible connecting piece, and the front end of the expanding grab handle is provided with a shifting block which toggles one end of the right hand contracting brake belt. The utility model has the advantages that people in an accident can be lowered to the ground from high buildings, the safe escape purpose is achieved and the operation is convenient.