The invention discloses an intelligent dynamic object infrared characteristic converting apparatus and method. The apparatus comprises a target and background environment radiation temperature dynamic acquisition module, a data processing and control module, and a semiconductor temperature adjustment module, wherein the signal output end of the target and background environment radiation temperature dynamic acquisition module is connected with the signal input end of the data processing and control module, and the signal output end of the data processing and control module is connected with the control command input end of the semiconductor temperature adjustment module. According to the invention, the target surface temperature is adjusted through currents, dynamic integration of target and background environment infrared characteristics is realized, the temperature increase and decrease can be adjusted through adjusting the direction and size of working currents, the energy adjusting performance is quite good, the power consumption is small, and since semiconductor thermal inertia is small, the temperature adjusting response time is quite short.