NOVELTY - Production of biomass based natural glass and co-producing lignin and microcrystalline cellulose from bamboo waste comprises filling steam explosion machine by waste, mixing with water by weight ratio 1:5-10, mixing solid with alkali solution, boiling at 50-100 degrees C for 0.5-3.5 hours; dividing black liquor into lignin, sodium hydroxide and residual liquid by membrane; hydrolyzing cellulose 5-10% hydrochloric acid (3-10 times volume of cellulose) at 50-100 degrees C for 1-5 hours; and bleaching by 2-5% hydrogen peroxide, testing by whiteness meter, and separating.    USE - Method for producing biomass based natural glass and co-producing lignin and microcrystalline cellulose from bamboo waste (claimed).    ADVANTAGE - The method has high transformation heat energy, forms marsh gas, and makes waste into lignin and microcrystalline cellulose; is environment-friendly and free of pollution, and suitable for large economical benefit.    DETAILED DESCRIPTION - Production of biomass based natural glass and co-producing lignin and microcrystalline cellulose from bamboo waste comprises:    (A) filling steam explosion machine by waste, carrying out steam explosion under 1.5-4 MPa for 0.5-9 minutes, mixing product with water by weight ratio 1:5-10, stirring the mixture sufficiently, separating solid from liquid by centrifuging or squeezing, using liquid phase for generating marsh gas by anaerobic fermentation, mixing solid with alkali solution (3-5 times weight of the solid), boiling at 50-100 degrees C for 0.5-3.5 hours, centrifuging or squeezing mixture to form bamboo cellulose filter residue and black liquor, with 1-15% alkali solution;    (B) dividing black liquor into lignin, sodium hydroxide and residual liquid by membrane, spraying drying lignin, and using residual liquid into biomass based natural gas;    (C) hydrolyzing cellulose 5-10% hydrochloric acid (3-10 times volume of cellulose) at 50-100 degrees C for 1-5 hours, centrifuging and filtering product to form coarse microcrystalline cellulose and acid liquid;and    (D) bleaching coarse microcrystalline cellulose by 2-5% hydrogen peroxide (1-5 times volume of coarse microcrystalline cellulose), testing by whiteness meter until more than 90% whiteness, and separating microcrystalline cellulose.