A device for measuring eccentricity of a lens includes a support portion, an eccentricity detector, a driving device, a vacuum absorption device, a clamping device, and a rotatable pole. The support portion includes a plurality of gear teeth and a first through hole. The eccentricity detector is positioned above the lens. The driving device includes a driving mechanism and a motor. The motor rotates the driving mechanism. The vacuum absorption device includes an air pipe and a vacuum generation element. The vacuum generation element is for removing air from the air pipe. The clamping device includes a first clamping element and a second clamping element. The first clamping element cooperates with the second clamping element to locate and fix the lens. The rotatable pole includes a second through hole. The rotatable pole is for supporting the support portion.