1. A color grading monitor with LUT mapping function, for performing LUT mapping to an input image, characterized in that the color grading monitor comprises an LUT storing unit, and further comprises: a receiving module, configured for receiving at least one LUT data or generating LUT data in a specific format according to received operation; an analysis module, configured for analyzing that whether the LUT data meets a predetermined condition, if the LUT data meets the predetermined condition, the received data is updated in the LUT storing unit for a new LUT mapping; if the LUT data does not meet the predetermined condition, the LUT data is discarded; and a display module, configured for displaying the input image which is updated with the new LUT mapping according to the analysis result from the analysis module.