The invention discloses a high-precision surface type measuring system, belongs to the technical field of high-precision surface type measuring instruments, and solves the problem that a surface type measuring system in the prior art is difficult to realize nanoscale surface type precision measurement on irregular curved surfaces such as spherical surfaces, aspheric surfaces and free-form surfaces. The system comprises a real-time feedback system, a motion scanning system, a real-time positioning laser system, a rotating table and a supporting frame, the rotating table, the real-time feedback system and the motion scanning system are all installed on the supporting frame, the real-time positioning laser system is installed on the motion scanning system, and the real-time positioning laser system comprises a rotating shaft. A spectrum confocal measuring head is installed on the rotating shaft, the motion scanning system comprises an X-direction kinematic pair, a Z-direction kinematic pair is installed on the X-direction kinematic pair, the rotating shaft is installed on the Z-direction kinematic pair through an installation support, and a laser displacement sensor is installed on the installation support. The system is used for high-precision surface type measurement of the workpiece, the measurement error is small, and the influence of the environment is small.