The invention relates to the technical field of blow-molding production of furniture, in particular to a production device and process for a compound table top of plastic furniture. The production device comprises a rack, a positioning mechanism, a cutting mechanism and an output mechanism, wherein the positioning mechanism comprises a limiting groove, a bearing table, a cutting space and a supporting component; the cutting mechanism comprises a cutting component, a bearing component, a crushing component arranged below the bearing component and used for crushing rim charges, and a transmission component through which the cutting component and the supporting component are connected; a mould is subjected to one-time rim charge cutting by the cutting component; the cutting component drives the transmission component to rotate so as to realize rotary position change of the mould; the rim charges are crushed by the crushing component, then fall onto the output mechanism and are directionally output by the output mechanism; and the rim charges on the mould are crushed and output while being automatically and efficiently cut by the cutting component. The technical problem of high production cost caused by the reason that the rim charges are cut and crushed independently in the prior art is solved.