The multi-function portable cold thermal binocular utilizes a multi-sensor image processing algorithm to fuse infrared thermal imaging, low-light sensor image, laser ranging, GPS and electronic compass data to make the information of the target object at multiple angles Presented. It can identify, measure and locate various suspicious targets on the ground, in the sea, in rivers and in the jungle, and take photos and video for evidence. It is light, easy to carry, and has good concealment.