The invention discloses a PCB conveying device for a chip mounter. The conveying device comprises two installing plates which are arranged side by side; the two ends of each installing plate are provided with a driving chain wheel and a driven chain wheel respectively, the driving chain wheel and the driven chain wheel are mutually connected through a driving chain, and driving chain wheels on thetwo installing plates are mutually connected through rotating shafts, a driving motor is connected to the driving chain wheel on one of the installing plates, the driving chain is formed by sequentially connecting a clamping chain link and a common chain link, the outer side of the clamping chain link is connected with a clamping device. The PCB conveying device for the chip mounter has the advantages of being high in positioning precision and good in sticking and installing stability.