Bottom-sitting self-elevating wind electricity pile driving barge

The invention provides a bottom-seating self-elevating wind electricity pile driving barge. The barge comprises an upper barge body, a crane, spud legs and a lower floating body. The crane is mounted on the upper barge body. The spud legs are mounted on the upper barge body. The lower floating body is connected with the spud legs. When the bottom-seating self-elevating wind electricity pile driving barge floats, the upper barge body floats on water, the spud legs are folded, the lower floating body is folded to the bottom of the upper barge body, and the lower floating body is located below the water. When the bottom-seating self-elevating wind electricity pile driving barge stands, the spud legs stretch out, the lower floating body sinks onto the seabed, the lower floating body is fixed onto the seabed, the upper barge body is lifted by the spud legs, and thus the upper barge body emerges from the water. The bottom-seating self-elevating wind electricity pile driving barge does not need to drive or pull a sp