The infrared image generation technology is the core technology for developing infrared imaging target simulators. First of all, the common infrared image generation technologies such as resistor arrays, optical fiber arrays, infrared Cathode Ray Tubes (CRT), Digital Micromirror Devices (DMD) and Liquid Crystal Light Valves (LCLV) are presented in detail. Then, the basic principle and development status of the above five infrared image generation technologies are described. By analyzing and comparing the parameters including the frame frequency, resolution, temperature range, dynamic range and spectral band, it is concluded that the resistor array is the most practical domestic infrared image generation technology at present. Finally, the trend of the domestic resistor arrays is analyzed.