NOVELTY - A water and ammonia preprocessing biomass reaction system comprises pretreatment reactor (1), liquid ammonia storage tank (8) for providing aqueous ammonia to pretreatment reactor, water tank (9) and steam generator (9.2) for providing superheated steam to pretreatment reactor, pressurizing device (10), ammonia evaporation tank (2) and water evaporation tank (3) connected to bottom of pretreatment reactor, ammonia absorption tank (4) connected to ammonia evaporation tank, remaining ammonia absorption tank (6) connected to ammonia absorption tank, and water absorption tank (5).    USE - A water and ammonia preprocessing biomass reaction system for agriculture, forestry, and sugar industry waste.    ADVANTAGE - Water and ammonia preprocessing biomass reaction system has simple structure, improves enzymolysis efficiency and enzyme effectiveness, and reduces cost and fermentation toxicity.    DETAILED DESCRIPTION - A water and ammonia preprocessing biomass reaction system comprises pretreatment reactor (1), liquid ammonia storage tank (8) for providing aqueous ammonia to pretreatment reactor, water tank (9) and steam generator (9.2) for providing superheated steam to pretreatment reactor, pressurizing device (10), ammonia evaporation tank (2) and water evaporation tank (3) connected to bottom of pretreatment reactor, ammonia absorption tank (4) connected to ammonia evaporation tank, remaining ammonia absorption tank (6) connected to ammonia absorption tank, water absorption tank (5) connected to water evaporation tank, pretreatment reactor heat conducting oil storage tank (11), evaporation tank heat conducting oil storage tank (12), and absorption tank heat conducting oil storage tank (13), in which liquid ammonia storage tank is connected to pretreatment reactor using high-pressure metering pump (8.1), water tank is connected to pretreatment reactor using steam generator, outside of pretreatment reactor, ammonia evaporation tank, water evaporation tan, ammonia absorption tank, and water absorption tank contain heat conducting oil interlayer (1.8, 2.7, 3.5, 4.4, 5.4), pretreatment reactor heat conducting oil storage tank is connected through pipe and pipeline pump (11.3) to heat conducting oil interlayer of pretreatment reactor, evaporation tank heat conducting oil storage tank is connected by pump (12.3) to heat conducting oil interlayer of ammonia evaporation tank and water evaporation tank, and absorption tank heat conducting oil storage tank is connected to heat conducting oil interlayer of ammonia absorption tank and water absorption tank.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of water and ammonia preprocessing biomass reaction system.    Pretreatment reactor (1)    Heat conducting oil interlayer (1.8, 2.7, 3.5, 4.4, 5.4)    Ammonia evaporation tank (2)    Water evaporation tank (3)    Ammonia absorption tank (4)    Water absorption tank (5)    Remaining ammonia absorption tank (6)    Liquid ammonia storage tank (8)    High-pressure metering pump (8.1)    Water tank (9)    Steam generator (9.2)    Pressurizing device (10)    Pretreatment reactor heat conducting oil storage tank (11)    Pipeline pump (11.3)    Evaporation tank heat conducting oil storage tank (12)    Pump (12.3)    Absorption tank heat conducting oil storage tank (13)