The utility model discloses a four-channel winch sensor, and relates to the technical field of a sensor. The sensor comprises a bearing mounted on a winch axle, a sensor housing mounted on the bearing, a junction box is mounted on the sensor housing, a circuit board is installed inside the junction box, and a four-path output groove type optoelectronic switch, a signal lightening protection device, and connection terminals are mounted on the circuit board. The four-channel winch sensor can simultaneously provide winch angle displacement signals to instrument equipment integrated by a comprehensive logging instrument, a drilling instrument, a digital anti-collision instrument and an electric drilling machine, and can conveniently maintain and change the groove type optoelectronic switch, and has a power source and the signal lightening protection device, thus having relatively high practical values.