The multimode laser tracker innovates the implementation method of laser tracking in principle, adopting a cascaded prism composite tracking mechanism to achieve large-range and high-precision tracking functions. It features large range, high precision, multi-mode variable scale, active/passive tracking, overcoming environmental obstructions, vibration suppression, etc. This series of instruments is highly adaptable for time-varying trajectory tracking, measurement, or processing in complex environments; combined with an image acquisition system, it can precisely adjust the imaging axis for visual guidance or large-scale high-precision image stitching. The series of devices has broad application prospects in fields such as robot dynamic error measurement, dynamic imaging detection, space laser communication, and military reconnaissance.