External tracking type laser transceiver

The invention discloses an external tracking type laser transceiver, and particularly relates to shooting training for simulating heavy weapon with a fire control system in laser maneuver training. The laser transceiver simultaneously has a laser receiving and emitting function and is directly clamped at the front end of a sighting telescope of a weapon, an indication laser coaxial with the sighting telescope is received in real time, a sight line of the weapon sighting telescope, namely the fire control system, is tracked in real time, a laser emission direction is corrected in real time according to a sight line direction, and a laser irradiation position is always ensured to be consistent with a sighting point. According to the laser transceiver, the mode that a conventional laser emitting device is installed on a gun barrel and needs to be parallel to the axis of the sighting telescope manually is changed, so that the calibration state deviation caused by collision and vibration ina using process and cali