Device used for reducing self-elevating drilling platform pile pulling resistance and drilling platform

The invention provides a device used for reducing self-elevating drilling platform pile pulling resistance and a drilling platform. The device comprises a length-adjustable occupation device which comprises a fixed barrel and a plurality of movable barrels, the multiple movable barrels are sequentially inserted into the fixed barrel from outside to inside, every two movable barrels can be connected in the manner of axial relative movement, the movable barrel on the outermost side can be connected with the fixed barrel in an axial moving manner, and the occupation device is lengthened or shortened through the movable barrels in the axial direction. The drilling platform comprises a platform body, a truss framed leg for supporting the platform body and a device body used for reducing the self-elevating drilling platform pile pulling resistance, the truss framed leg comprises a truss framed leg body and a pile shoe connected to the lower portion of the truss framed leg body, the occupation device is arranged on