LED screen with small spacing refers to indoor LED screen with LED dot spacing below P2.5, mainly including P2.5, P2.0, P1.875, P1.667, P1.5625, P1.25 and other LED screen products. LED screens with small spacing are characterized by small dot spacing and high resolution per unit area. It can display higher definition graphic images and videos, but also can display more video and image screen, especially in the application of image Mosaic, can be seamless and arbitrary large area Mosaic. Of course, the video processor is indispensable for the small-spacing LED display to achieve the desired display effect.