A two-dimensional detail enhancement technology is designed based on FIR filter and image dynamic compression.First of all,two-dimensional real-time infrared image was decomposed from row vector and column vector.Secondly,image details of row vector and column vector are extracted by FIR filter,and then the extracted image details and the original image are weighted and fused.Lastly,the fusion image is dynamically compressed by histogram algorithm,and detail enhancement of real-time infrared image which can satisfy actual application is achieved.The results show that this method has a certain feasibility and has been applied to the practice.