Using the idea of quantum-inspired method, the normalized image pixels are represented in the form of quantum bits, taking full advantage of the strong correlation between a pixel and other pixels in its neighboring field, a spatial filtering image enhancement algorithm based on the quantum-inspired method is proposed, and the algorithm is simulated and compared for two spatial filtering templates: 3×3 and 5×5. Finally, image entropy is introduced to evaluate the image enhancement effect of the algorithm. In terms of the subjective vision and the objective evaluation index, the results show that the algorithm is superior to the traditional image enhancement algorithm. For the images with low visibility and contrast, compared with the size of 3×3 spatial filtering template, when the size of spatial filtering template is 5×5, the effect of the algorithm is better and the entropy of the corresponding result image is larger.