Split assembling and integral hoisting method for combined foremast on ship

The invention relates to a split assembling and integral hoisting method for a combined foremast on a ship, the method comprises a split assembling link and an integral hoisting link, the combined foremast structurally comprises a base, a mast body and mast top equipment, in the split assembling link, the base, the mast body and the mast top equipment are manufactured in a split mode in different sites, and the mast top equipment is manufactured in a split mode in different sites. Respectively transporting to a total group site; the base is hoisted to a general assembly platform; turning over the mast body by 90 degrees by using a crane to be in a normal state; the mast body is normally hoisted to the base and installed in a butt joint mode; the mast top equipment is embedded in the top of the column body of the mast body, and assembling of the combined foremast is completed; and in the integral hoisting link, the weight and the gravity center position of the combined foremast are calculated, and the integral