NOVELTY - A method for comprehensive utilization of lignocellulose involves crushing lignocellulosic biomass into particles, spraying phosphoric acid solution, conducting acid treatment, placing it into microwave pyrolysis device, hydrolyzing, condensing and collecting phase liquid pyrolysis product, acetic acid and furfural, water-ultrasonic extracting the residual biomass semi-coke, filtering and concentrating to form light yellow concentrated liquid glucose and light color phosphate crystal, then by leaching, mixing and pressing to form high-quality sulfur-free biomass smokeless honeycomb coal.    USE - As method for comprehensive utilization of lignocellulose (claimed).    ADVANTAGE - The method has energy saving and high efficiency; and has no waste.    DETAILED DESCRIPTION - A method for comprehensive utilization of lignocellulose involves crushing lignocellulosic biomass into particles having particle diameter of 2 mm small particle, spraying phosphoric acid solution, where the phosphoric acid solution and the lignocellulosic biomass have weight ratio of 1:4:10, conducting acid treatment for 12-24 hours, placing the treated lignocellulosic biomass into a microwave pyrolysis device, where the unit mass of lignocellulose raw material receives by microwave output power of 2-3W/g, the temperature of not less than 120 degrees C, keeping for 6-15 minutes, conducting hydrolyzation reaction, when the unit mass of lignocellulose raw material receives by microwave output power of 3-5 W/g, the pyrolysis temperature of less than or equal to 170 degrees C, keeping for 5-10 minutes, condensing and collecting phase liquid pyrolysis product, acetic acid and furfural, water-ultrasonic extracting the residual biomass semi-coke for several times, for 5-10 minutes, filtering, repeating for 3-4 times, collecting the filtrate, combining with clarifying lime water and filtrate to PH=7.5, then concentrating the mixture to obtain light yellow concentrated liquid glucose and light color phosphate crystal, leaching the light yellow concentrated liquid glucose and light color phosphate crystal, then mixing it with the biomass semi-coke and red clay, calcium oxide, and potassium nitrate and pressing to form high-quality sulfur-free biomass smokeless honeycomb coal, where the lignocellulosic biomass is rice hull, rice, wheat straw, fruit shell, corn core, wood, and bamboo.