The invention discloses a full-automatic deburring machine for molded parts. The full-automatic deburring machine comprises a rack, a control box as well as a feeding mechanism, a loading mechanism, a positioning and fixing mechanism, a linear moving mechanism, an edge cutting mechanism and an unloading mechanism which are connected with the control box respectively and controlled by the control box, wherein the feeding mechanism, the loading mechanism and the linear moving mechanism are arranged sequentially, the positioning and fixing mechanism is arranged at one end, close to the loading mechanism, of the linear moving mechanism, and the edge cutting mechanism and the unloading mechanism are arranged on the rack sequentially and correspond to a moving track of the linear moving mechanism. The full-automatic deburring machine is skillful and reasonable in structural design, high in automation degree and high in deburring speed and efficiency, burrs on an injection molded product can be removed automatically, repeated labor is avoided, the labor intensity is reduced greatly, the production hours are shortened greatly, the production cost is saved, meanwhile, harm to human hands due to use of a cutter during manual burr cutting is avoided, bad products caused by errors in manual work can be avoided, and the product quality is guaranteed.