The invention relates to the technical field of electronic device assembly and production, in particular to a plastic suction disc feeding system. The plastic suction disc feeding system comprises a material frame, wherein a material storage box is arranged on the material frame, is suitable for being used for piling plastic suction discs containing electronic devices, and realizes the ascending and descending regulation of the plastic suction discs; a direct vibration material conveying device and the material frame are subjected to extension design; a connecting claw mechanism is erected above the plastic suction disc and does XY plane movement; the claw connecting mechanism at least comprises two groups of claw heads capable of realizing alternate working; therefore after the ascending and descending regulation of the plastic suction disc in the material storage box, the proper claw head is selected through the claw connecting mechanism; the electronic devices on the plastic suction disc are grasped by the claw head and are put into the direct vibration material conveying device; then, the electronic devices are conveyed to a discharging position through the direct vibration material conveying device so that the subsequent plug-in assembly can be performed. Through the cooperated work of the material storage box, the direct vibration material conveying device and the claw connecting mechanism, the claw head can be automatically selected and used according to requirements for grasping and conveying out the electronic devices; the feeding speed is accelerated; the continuous automatic feeding work is realized; the automation production requirements are met.