Preparation method of glucoside cationic surfactant

The invention discloses a preparation method of a glucoside cationic surfactant, which is characterized by comprising the following steps: (1), adding raw materials including glucose, chlorohydrins and a catalyst in to a reactor in a ratio of 1:2-5:0.002-0.01 and performing a dehydration reaction under a reduced pressure for 30 to 120 minutes at 80 to 110 DEG C to obtain yellowish or colorless transparent sticky liquid; (2) neutralizing the reaction product with a neutralizer till the pH value of the reaction product is 7 to 8 and performing molecular distillation at 100 to 180 DEG C and under 1 to 3MPa to obtain solid chlorinated glucoside; and (3) preparing 30 to 60 percent aqueous solution of the chlorinated glucoside, slowly adding tertiary amine, which is added with an organic solvent, into the solution of the chlorinated glucoside in a molar ratio of 1:0.5-1.0 and performing a reaction at 60 to 90 DEG C and under normal pressure for 2 to 10 hours to obtain transparent solution of the glucoside cationic surfactant.