Abstract: Abstract: Furfural residues and wasted mushroom inoculation bags are the wastes from utilized lignocellulosic agricultural/ forestry residues. There were 240-300 million tons of furfural residues and 1500 million tons of wasted mushroom inoculation bags generated in China every year, but they were not disposed well and caused environmental problems. In order to reuse these wasted biomasses thoroughly and cleanly, the multi-production gasification technology was adopted in this study to convert furfural residues and wasted mushroom inoculation bags into bio-carbon and bio-based combustion gas. The component properties of furfural residues and wasted mushroom inoculation bags as well as their products (bio-carbon and bio-based combustion gas) were also analyzed, correspondingly. Compared to the wasted mushroom inoculation bags (11.14%), the ash content of furfural residues was lower (8.75%). The volatile content of furfural residues (66.05%) was lower than wasted mushroom inoculation bags (68.37%), whereas the fixed carbon content of furfural residues (25.21%) was higher than wasted mushroom inoculation bags (20.50%). The C content of furfural residues was 53.04% which was higher than the wasted mushroom inoculation bags (42.55%), whereas the contents of H (1.71%), O (35.14%), N (0.62%) and S (0.73%) of furfural residues were all lower than wasted mushroom inoculation bags (2.61%, 40.72%, 1.34% and 0.86%, respectively.) The heating value of furfural residue was 20.87 MJ/kg, higher than wasted mushroom inoculation bags (18.01 MJ/kg). From thermogravimetric (TG) analysis, the differential thermogravimetric (DTG) shoulder peak caused by hemicellulose disappeared for furfural residues, and its maximum weight loss rate was higher but total weight loss was lower than wasted mushroom inoculation bags. The bio-carbon yields of furfural residues and wasted mushroom inoculation bags were 29.99% and 22.26%, respectively. Considering that the ignition and shutdown process of the gasifier will lead to an excessive gasification and consumption of the bio-carbon, and the feeding amount of the materials in this study was limited, the yield of the bio-carbon and bio-based combustion gas will be higher in continuous industrial production process. The ash and volatile contents of the bio-carbon generated from furfural residues were 22.49% and 5.56%, respectively, significantly lower than that from the wasted mushroom inoculation bags (47.04% and 10.94%), whereas the fixed carbon content of bio-carbon generated from furfural residues was much higher (70.73%) than that from the wasted mushroom inoculation bags (42.02%). For the elements, only N content of the bio-carbon generated from furfural residues (0.57%) was lower than that from wasted mushroom inoculation bags (1.07%). The heating values of the bio-carbon generated from furfural residues and wasted mushroom inoculation bags were 26.18 and 20.09 MJ/kg, and their specific surface areas were 253.58 and 189.08 m2/g, respectively. Compared to bio-carbon generated from rice straw, cotton stalk and corn stalk, the furfural residue bio-carbon has good potential to be used as the raw material for the activated carbon production, whereas the bio-carbon from wasted mushroom inoculation bags can be good material to produce carbon-based fertilizer. The bio-based combustion gas yields of furfural residues and wasted mushroom inoculation bags were 2.49 and 2.25 m3/kg, respectively, and their heating values were 4.86 and 4.92 MJ/m3, respectively.