Bottom-supported self-elevating wind power pile driving boat

The invention discloses a bottom-supported self-elevating wind power pile driving boat. The bottom-supported self-elevating wind power pile driving boat comprises an upper boat body, pile legs and a lower floating body, wherein the pile legs are installed on the upper boat body, and the lower floating body is connected to the upper boat body through the pile legs. When the pile driving boat stands, the lower floating body is located on the seabed in a bottom-supported mode, and the upper boat body is ejected off from the water surface under the supporting force of the seabed on the lower floating body and the buoyancy of the lower floating body. The pile driving boat can be dispatched or towed, and the lower floating body is retracted into the upper boat body. The lower floating body can adjust the water suction and discharge amount, so that the lower floating body obtains different levels of buoyancy to determine the load on a sludge surface and balance the overturning moment generated when a hoist on the up