The invention discloses a method for mounting a
pile-stabilizing positioning platform. The method includes the steps that A, multiple GPS moving stations are mounted on a floating crane; B, a ship board connecting edge used for constructing a supporting leg bracket of the
pile-stabilizing positioning platform is attached and fixed to the ship board outer edge of the floating crane, and an inner frame of the supporting leg bracket is adaptive to the outer
diameter of each
engineering pile; C, the relative position relations between the GPS moving stations and the center point of the inner frame of the supporting leg bracket are detected and calculated out; D,
lofting coordinates corresponding to each GPS moving
station are calculated out through the coordinates of a center point of each actual
engineering pile sinking position according to the relative position relations between the GPS moving stations and the center point of the inner frame of the supporting leg bracket; and E, the floating crane is moved until the actually-measured coordinates of each GPS moving
station are consistent with the corresponding
lofting coordinates. The method has the advantages that operation is simple, and positioning is accurate.