The image enhancement methods are divided into 3 categories including histogram, fuzzy logic and optimal methods. Histogram based contrast enhancing methods focus on modifying histogram of images. Histogram specification and histogram equalization are commonly used as conventional contrast enhancement mothods. Patently, the fuzzy logic based image enhancement methods make image which quality is clearer than the traditional methods. However, these methods still use the global approach, therefore, it is difficult to enhance all land covered in remote sensing images. This paper proposes a local approach based new algorithm of image enhancement for the remote sensing images and the large size remote sensing images, calculating auto thresholds and combination the grey adjust operators.