The invention relates to a multi-optical axis consistency tester based on a multispectral target plate and a rotating reflector and belongs to the opto-electrical field. The invention comprises the main lens of a large caliber offaxis double reverse collimation mirror, the secondary mirror of the collimation mirror, a double-axis rotating mechanism, a plane mirror, an attenuator, a spectroscope A, a multispectral target plate, a spectroscope B, a near infrared CCD, an optical fiber coupler, an optical fiber, a multi-channel video collecting device, etc. The plane mirror is driven by the rotating mechanism; the multispectral target plate is arranged in the reflection optical path of the spectroscope A; after the transmission optical path of the spectroscope A passes through the spectroscope B, the transmission light enters the near infrared CCD; simultaneously the reflection light enters the incident end of the optical fiber; the other end of the optical fiber is connected with the transmitting end of the laser range measuring machine of the optical fiber coupler; a laser pulse is coupled with and enters the optical fiber. The multi-optical axis consistency instrument device is used for detecting the static and dynamic errors of the consistency between the multi-optical axes in the broad spectrum range of a complex opto-electrical system, has high precision and is conveniently carried.