A method for the enzymatic saccharification treatment of a lignocellulose-based raw material, the method comprising: subjecting a lignocellulose-based raw material to a pretreatment for bringing the lignocellulose to a state of being enzymatically saccharifiable, thereby obtaining a pretreated lignocellulose-based raw material; mixing the pretreated lignocellulose-based raw material with water, an enzyme for enzymatic saccharification treatment and an electrolyte containing a water-soluble salt, by a) preparing a raw material suspension from the pretreated lignocellulose-based raw material, together with an electrolyte containing a water-soluble salt, adjusting the electrical conductivity to 5 mS/cm to 25 mS/cm, wherein the water-soluble salt is at least one water-soluble salt selected from alkali metal salts and alkaline earth metal salts; b) adding the raw material suspension, to cellulose saccharification enzyme-containing water; thus subjecting the pretreated lignocellulose-based raw material to an enzymatic saccharification treatment through an enzymatic saccharification reaction; separating and recovering the reaction product and an enzyme-containing solution from the treated suspension after the enzymatic saccharification treatment; and recycling the recovered enzyme-containing solution as an enzyme for the enzymatic saccharification treatment. subjecting a lignocellulose-based raw material to a pretreatment for bringing the lignocellulose to a state of being enzymatically saccharifiable, thereby obtaining a pretreated lignocellulose-based raw material; mixing the pretreated lignocellulose-based raw material with water, an enzyme for enzymatic saccharification treatment and an electrolyte containing a water-soluble salt, by a) preparing a raw material suspension from the pretreated lignocellulose-based raw material, together with an electrolyte containing a water-soluble salt, adjusting the electrical conductivity to 5 mS/cm to 25 mS/cm, wherein the water-soluble salt is at least one water-soluble salt selected from alkali metal salts and alkaline earth metal salts; b) adding the raw material suspension, to cellulose saccharification enzyme-containing water; thus subjecting the pretreated lignocellulose-based raw material to an enzymatic saccharification treatment through an enzymatic saccharification reaction; separating and recovering the reaction product and an enzyme-containing solution from the treated suspension after the enzymatic saccharification treatment; and recycling the recovered enzyme-containing solution as an enzyme for the enzymatic saccharification treatment. a) preparing a raw material suspension from the pretreated lignocellulose-based raw material, together with an electrolyte containing a water-soluble salt, adjusting the electrical conductivity to 5 mS/cm to 25 mS/cm, wherein the water-soluble salt is at least one water-soluble salt selected from alkali metal salts and alkaline earth metal salts; b) adding the raw material suspension, to cellulose saccharification enzyme-containing water; thus subjecting the pretreated lignocellulose-based raw material to an enzymatic saccharification treatment through an enzymatic saccharification reaction;