A wind power negative ion generator includes a negative ion generator main body and a wind power generation device coupled to the negative ion generator main body. The wind power generation device has a power cord connected to a power line of the negative ion generator to supply electricity. The wind power generation device includes fan blades to communicate with outside and form a wind receiving side. The negative ion generator of the present invention can be widely used, not limited to a fixed power source socket. The negative ions generated by the present invention can move along with the wind to enlarge the range of the negative ions.