Optical axis consistency is an important indicator for measuring the performance of multi-sensor optoelectronic systems. In order to address the issue of narrow working spectral range and limited system flexibility in the multi-sensor axis consistency detection system，this paper designed a board-spectrum multi-sensor axis consistency detection system. The system based on the concepts of optical path switching and opto-thermal conversion. The system used a Cassegrain reflective optical system as the receiving and transmitting system in the range from visible light to long-wave infrared. A stepper motor was used to move the reflective mirror above the guide rail， allowing for the switching of the system's optical path. The copper sulfide-coated germanium glass was used to convert the short-wavelength spot into a hot spot as the photothermal conversion target. The long-wave infrared detector was used to collect the laser spot images of various spectral bands. The system could detect the spectral range of 0.4 - 14 μm. The analysis of the optical system's image quality shows that the root mean square （RMS） diameter caused by aberrations is consistently below 9 μm across various wavelengths. The system also exhibits strong energy concentration. Detection accuracy of the system is analyzed， and the maximum measurement error is 0.1 mrad. Experiments on repetitive precision involving the guide rail's back-and-forth movement， and accuracy measurement experiments on the system， verify the reliability of the system. The results indicate that the detection system meets the requirement of instrument accuracy level 1.5. The detection system has a compact structure， a wide range of applicable spectral， and the ability to perform axis consistency testing for multi-sensor optoelectronic devices.