NOVELTY - Method for manufacturing sugar liquid from cellulose containing biomass, involves obtaining enzyme saccharified liquid by adding saccharogenic amylase to pre-processed material obtained by pre-processing cellulose containing biomass, carrying out cross-flow filtration of enzyme saccharified liquid, filtering obtained sugar solution, and purifying the obtained solution as membrane impervious fraction to obtain sugar liquid.    USE - The method is useful for manufacturing sugar liquid for fermentation production of chemical products.    ADVANTAGE - The method manufactures sugar liquid efficiently and rapidly in large amounts with high quality, improves reactivity of biomass and generation rate of sugar liquid and removes solid content of biomass completely, and has long term operability.    DETAILED DESCRIPTION - Method for manufacturing sugar liquid from cellulose containing biomass, involves (a) obtaining enzyme saccharified liquid by adding saccharogenic amylase to pre-processed material obtained by pre-processing cellulose containing biomass, (b) carrying out cross-flow filtration of enzyme saccharified liquid using porous microfiltration membrane having mean pore diameter of 0.25 mu m or less, and obtaining sugar solution as membrane permeation fraction, and (c) filtering the obtained sugar solution using nano membrane filter and/or reverse osmosis membrane, and purifying the obtained solution as membrane impervious fraction to obtain sugar liquid. An INDEPENDENT CLAIM is included for apparatus for manufacturing sugar liquid, which comprises enzyme saccharification tank having pre-processed material supply portion for supplying pre-processed material of cellulose content biomass, and saccharogenic amylase supply portion for supplying saccharogenic amylase, viscosity meter for measuring viscosity of enzyme saccharified liquid, hydration and drainage liquid control portion for performing hydration and/or drainage with respect to the viscosimetry value of enzyme saccharified liquid, porous microfiltration membrane having mean pore diameter of 0.25 mu m or less, membrane separation tank having the microfiltration membrane for carrying out cross-flow filtration of enzyme saccharified liquid obtained by the enzyme saccharification tank to obtain sugar solution, and sugar liquid purification portion having nano membrane filter and/or reverse osmosis membrane for filtering the sugar solution obtained by membrane separation tank.