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Corn gluten meal (CGM) first blended with bean dregs, the mixtures were extruded into pellets using a twin-screw extruder, and the pellets were extruded again as specimens. Tensile strength, thermal stability and morphology of the specimens were investigated. When 20% (w/w%) of the bean dregs were blended, the specimen had a maximum tensile strength. In addition, the specimen had a uniform phase based on observations using scanning electron microscopy (SEM). The result of thermal gravimetric analysis (TGA) showed that the specimen (containing 20% bean dregs) can keep thermal stability below 240℃. The specimen can be applied in agriculture due to its low cost and biodegradability.