A method for adjusting a uniformity of a panel is provided. The panel includes a plurality of blocks. The method includes: comparing whether a color display component of each of the blocks in response to a first input value matches a target component, comparing whether a color characteristic value of each of the blocks in response to a second input value matches a target characteristic value, and providing a corresponding modified second input component and a modified third input component for each of the blocks. The target component is determined according to a plurality of main display components of a plurality of display values corresponding to the blocks, and the target characteristic value is determined according to the plurality of color characteristic values corresponding to the blocks.