An agitator lid suitable for different paint pot openings includes a paint outlet mechanism for controlling paint pouring, and at least two compression mechanisms compressing a paint pot with the agitator lid, each compression mechanism involving: a through-hole provided on the agitator lid, a compression rod passing through the through-hole, a sealing sleeve sheathed on the outside of the compression rod, an up-turned edge of the sealing sleeve pressing on the agitator lid, the periphery of the compression rod between the up-turned edge of the sealing sleeve and a handle on an upper end of the compression rod being sheathed with a compression spring, a lower end of the compression rod being a presser foot, a face of the presser foot being a fan ring shape, a vertical face being provided on a connecting line between two arc-shaped lines along the fan ring shape.