Data processing method, data processing device and tiled display system

An embodiment of the invention relates to the technical field of display and provides a data processing method, a data processing device and a tiled display system. The data processing method can avoid the problem of anamorphose caused by joints to improve display quality. The method includes: acquiring a frame of to-be-displayed first image data on a first area of a display screen; according to positions of the joints in a second area and widths of line joints and/or column joints, removing pixel data corresponding to the line joints and/or the column joints from the first image data to obtain second image data divided into multiple parts by the removed pixel data, wherein a width difference between the first area and the second area smaller than the first area is equal to the width sum of all line joints and/or equal to the width sum of all column joints; displaying on the second area of the display screen according to each part of the second image data divided by the removed pixel data. The data processing method, the data processing device and the tiled display system are used for data processing in the tiled display system.