In order to evaluate the infrared multi-band imaging-guided weapon accurately, the infrared multi-band target simulation technology has become a research hotspot at home and abroad. In this paper, the development status of hardware-in-the-loop infrared multi-band target simulation system abroad in recent years is introduced in detail from the aspects of the composition, working principle, technical indicators and characteristics,which has a certain reference significance for the subsequent development of the domestic infrared multi-band target simulation technology.