The invention belongs to the technical field of boards and discloses a full-automatic groove milling machining center for chopping boards. The full-automatic groove milling machining center comprises a chopping board conveying system assembly and a milling system assembly, wherein the chopping board conveying system assembly comprises feeding systems and a discharging system; the number of the feeding systems is two; the two sets of feeding systems are arranged side by side; each set of feeding system comprises a machining station for a cutter to finish machining action; the milling system assembly only comprises one set of milling cutter assembly; the milling cutter assembly reciprocates between the machining stations of the two sets of the feeding systems to execute work; when the milling cutter assembly reciprocates once, one chopping board on one machining station of each of the two sets of the feeding and conveying systems is machined; when the milling cutter assembly machines at the machining station of one set of the feeding system, one to-be-machined chopping board is fed into the machining station by the other set of the feeding system. According to the full-automatic groove milling machining center disclosed by the invention, by adopting a mode of arranging the two sets of the feeding systems side by side, conveying and processing of the chopping boards are finished on the two sets of feeding systems in a staggered manner, so that the machining efficiency can be improved by one time.