The invention relates to a fixed desktop
maintenance system based on gray
scale measurement, which comprises a fixed desktop, wherein the fixed desktop is arranged above the table legs and adopts a
glass structure and is used for providing a place for a user to use the
desk; a CCD shooting device, wherein the CCD shooting device is used for carrying out image data induction on the desktop to output corresponding field desktop images; a gray scale judging device, wherein the gray scale judging device is used for receiving a block fitting image, calculating an average gray scale value of the block fitting
image based on the gray scale values of all pixel points of the block fitting image, and comparing the average gray scale value with a preset gray scale value, and when the average gray scale value is smaller than or equal to the preset gray value, emitting a cleaning-required
signal; a cleaning driving device, wherein the cleaning driving device is arranged near the fixed desktop, is connected with the gray scale judging device, and is used for carrying out instant cleaning operation on the fixed desktop when the cleaning-required
signal is received. By using the device, the self-adaptive cleaning operation of the desktop is realized.