Survivable rate factor of the tank is analyzed, on these bases, the tank with the reinforced armor,depending on zigzagging, is very difficult to evade attacking of infrared imaging guided anti-tank missile,therefore,a new camouflage way of combining IR camouflage net with interference is put forward. Taking the guided missile of AGM-65D as an example, the tank targets′ survivable rate is increased.As well as,the method can be great use for other targets.