Because of the features of high interference immunity and all-weather operation, the infrared imaging technology is widely used in various fields. A pseudo-color enhancement display method based on histogram equalization is proposed. The method includes two steps: image enhancement and pseudo-color processing. First, the mean value of an image is calculated. A different special transform method is used according to the mean value. Then, the histogram is equalized. In the process of pseudo-color processing, new pseudo-color coding tables are designed and are used for the pseudo-color processing and display of the enhanced image. The test result shows that after the processing of pseudo-color enhancement, the display effectiveness, dynamic range and details of the image are improved obviously.