The invention discloses a method capable of carrying out green high-efficiency hydrolysis pretreatment on lignocellulose biomass. The method in the invention comprises the steps of hydrolyzing the hemicellulose in the cellulose biomass into saccharide products mainly containing xylose and oligose thereof using a two-step temperature-changing segmentation hydrolysis method so as to accomplish the pretreatment, and adding the pretreated solid raw material mainly containing cellulose and lignin to cellulase so as to accomplish enzymatic hydrolysis and recover the saccharide products to the utmost extent. The invention uses high-temperature liquid water as reaction medium, has the advantages that the method has low cost and is environment-friendly and green. The reaction conditions are moderate, the saccharide products are degraded less, and the recovery rate is high. By adopting the two-step temperature-changing segmentation hydrolysis method, the method not only hydrolyzes the hemicellulose to the utmost extent to obtain the saccharide products, but also further pre-treats the raw material such that the cellulose is made into glucose through enzymatic hydrolysis, reaching the purpose of protecting environment and hydrolyzing the lignocellulose biomass highly effectively. The raw material is capable of realizing waste utilization and promotes the development of green industries.