The invention discloses a device for discharging, tray loading and tray changing of DBC products, and relates to the technical field of material transfer. The device for discharging, tray loading andtray changing of the DBC products comprises a rack assembly, wherein a lifting basket feeding and discharging line body, an NG material excluding temporary storage conveyor, a product grabbing assembly, a carrier lifting positioning assembly, a visual deviation rectifying module and a lifting basket lifting assembly, the lifting basket feeding and discharging line body is used for conveying a lifting basket, the NG material excluding temporary storage conveyor is used for temporary storage, outflow and in-place sensing of NG products, the product grabbing assembly is used for grabbing a product, the carrier lifting positioning assembly is used for fixing a front track flow carrier, the lifting basket lifting assembly is used for automatic opening and closing of a lifting basket, automatictaking and changing of trays and precise position on a tray, automatic grabbing and switching of the tray can be achieved, a packing function is powerful, a manual intervention frequency can be effectively reduced, and the device is wide in application and high in flexibility, and can be applied to product discharging of various production lines.