TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - preferred composition: catalyst of Formula (1):M=Fe or Zn;L1, L2 or L3=mono, double, tri or four-coordination ligand, same or different;A and B=C, N, S, B, Si or P, same or different;n=0 and 1.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: Cellulose biomass comprises cellulose, semi-cellulose or lignose. Chemical agent in the normal temperature and pressure chemicophysics field method is ammonia or strong phosphoric acid or any matter which can pass distilled water and can be recycled easily. Exchange resins is macroporous polymeric resin, macroporous polymeric alkalescence resin, heat regenerated resin or its compound. Preferred Conditions: Hydrolyzing cellulose biomass is carried in heat field. Preferred Parameters: Pre-treating cellulose biomass adopts strong acid or strong alkali high-temperature high-pressure method, strong acid or strong alkali decrepitation method, ammonia decrepitation method, normal temperature and pressure chemicophysics field method. Normal temperature and pressure chemicophysics field method is ultrasonic, microwave or magnetic force. Physical field is ultrasonic field, frequency is 17 kHz to 300 MHz, best is 18 kHz to 100 MHz, intensity is 0.1W to 10 kw/L, preferably 0.1 Watts/cm2 to 300 Watts/cm2, best intensity is 2-6 kW, preferably 80-200 Watts/cm2, best is 2 kW/20 kHz ultrasonic; Or physical field is microwave field, frequency is 300 MHz to 300 GHz, intensity is 0.1 W to 10 kW/L, preferably 100-3000 W/L; or physical field is magnetic force field, intensity is 0.2-12 T. Preferred Process: Pre-treating cellulose biomass includes putting the mixture of cellulose biomass and strong phosphoric acid to physical field, obtaining pre-treated cellulose biomass; separating pre-treated cellulose biomass, obtaining cellulose and recycling phosphoric acid and organic menstruum. Recycling step (d1) of catalyst: extracting hydrolysate of step (b) by adopting organic mentruum, obtaining the recycled catalyst, also, adopting exchange resins to extract the hydrolysate of step (b), and obtaining the recycled catalyst.