The invention relates to a touch switch and a wind driven generator using the touch switch. The wind driven generator comprises a shell body, a wheel hub, a main shaft and a wheel hub connecting screw rod, the rear end of the wheel hub connecting screw rod is provided with a stopping block, the wind driven generator further comprises a warning circuit of the touch switch, the touch switch is arranged on the rear side of the wheel hub connecting screw rod, the touch switch comprises a fixed part which is fixed to the shell body, a moving part is installed on the fixed part in the left-right direction or the circumferential direction of the main shaft in a guiding and moving mode, fixed contacts are arranged on the fixed part, moving contacts which are in contact with the fixed contacts are arranged on the moving part, and the moving part is used for being pushed by the wheel hub connecting screw rod or the stopping block in the circumferential direction of the main shaft to separate from the fixed part when the wheel hub connecting screw rod loosens from front to back. The wind driven generator and the touch switch used in the wind driven generator capable of monitoring the wheel hub connecting screw rod when the wheel hub connecting screw rod exits from a screw rod installing hole are provided.