The invention discloses a data processing method and a data processing system for remote display. The method of a sending end comprises the steps of S1.1, acquiring an original image needing to be remotely displayed; S1.2, generating difference data, undamaged data and damaged data according to the original image, wherein each frame of undamaged data is corresponding to N frames of damaged data, and each frame of damaged data is corresponding to one frame of difference data; and S1.3, sending the difference data, the undamaged data and the damaged data to a receiving end. The method of the receiving end comprises the steps of S2.1, acquiring the difference data, the damaged data and the undamaged data; S2.2, generating a display image frame according to the difference data, the damaged data and the undamaged data; and S2.3, displaying the display image frame. According to the method and the system provided by the invention, both undamaged image display and high real-time image display can be achieved, three requirements of low bandwidth, good user experience and low CPU utilization rate can be simultaneously met, and the advantage of being sufficiently close to a local PC experience display effect is achieved.