The invention discloses a height control method of a
tower crane lifting suspension hook, an apparatus and a
system thereof, and a
tower crane to improve the height determination accuracy of the lifting suspension hook in order to improve the height spacing accuracy of the lifting suspension hook and improve the lifting
work safety of the
tower crane. The control method comprises the following steps: acquiring the weight of a
suspended load, the operation position of a
radius changing dolly and the detected height of the lifting suspension hook; obtaining the sagging
rope length of a lifting steel
wire rope between a steel
wire rope starting bearer point and a steel
wire rope end bearer point on a lifting jib according to the weight of
suspended load and the operation position of the
radius changing dolly; and obtaining a real height of the lifting suspension hook according to the sagging
rope length of the lifting steel wire
rope, the detected height of the lifting suspension hook and a corresponding relation between each of the sagging rope length of the lifting steel wire rope and the detected height of the lifting suspension hook and the real height of the lifting suspension hook.