The utility model provides a floating wind turbine foundation and floating wind turbine generator system, including floating platform and mooring system, floating platform pass through the fairlead with mooring system fixed connection, its characterized in that, floating platform includes the flotation pontoon, be provided with a plurality of fairleads on the flotation pontoon, the fairlead with mooring hawser among the mooring system connects, mooring hawser with the link of fairlead divide into first branching and second branching, first branching with the second branching respectively with two fairleads on the flotation pontoon are connected. Floating platform's flotation pontoon and ballast tank have effectively increased the distance between focus and the buoyant center, have consequently effectively increased to rotate to resume rigidity, and nearly surface of water department adopts the little cylinder section of thick bamboo of sectional area effectively to reduce the wave force size of nearly surface of water department, and mooring hawser shakes the motion through adopting triangle -shaped to be connected the head that can effectively restrict floating platform between guide to visitors hole and the floating platform simultaneously.