A method for preparing a spiro quaternary ammonium compound comprising: a first step of reacting a cyclic secondary amine derivative with dihaloalkane in the presence of a basic resin represented by chemical formula 1 below, thereby obtaining a spiro derivative compound and a resin; a second step of reacting the resin obtained in the first step with an acid, thereby obtaining a resin represented by chemical formula 2 below; and a third step of reacting the spiro derivative compound obtained in the first step with the resin obtained in the second step, thereby obtaining the spiro quaternary ammonium compound and a resin, wherein represents a polymer-constituting resin; R 1, R 2 and R 3 are each independently hydrogen or a C 1 -C 6 alkyl group; and anion A represents hydroxide (OH -) or carbonate anion (HCO 3 -), wherein represents a polymer-constituting resin; R 1, R 2, and R 3 are each independently hydrogen or a C 1 -C 6 alkyl group; and anion B represents tetrafluoroborate (BF 4 -), hexafluorophosphate (PF 6 -), or bis (trifluoromethylsulfonyl) imide ((CF 3 SO 2) 2 N -); wherein the cyclic secondary amine derivative of the first step is represented by the chemical formula 3 below: wherein m and n are independently an integer of 0 to 6, Z 1 and Z 2 are each independently CH, and Z 5 and Z 6 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and wherein the dihaloalkane of the first step is represented by the chemical formula 4 below: wherein o and p are each independently an integer of 0 to 6; Z 3 and Z 4 are each independently CH; Z 7 and Z 8 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and X is Cl, Br, or I. a first step of reacting a cyclic secondary amine derivative with dihaloalkane in the presence of a basic resin represented by chemical formula 1 below, thereby obtaining a spiro derivative compound and a resin; a second step of reacting the resin obtained in the first step with an acid, thereby obtaining a resin represented by chemical formula 2 below; and a third step of reacting the spiro derivative compound obtained in the first step with the resin obtained in the second step, thereby obtaining the spiro quaternary ammonium compound and a resin, wherein represents a polymer-constituting resin; R 1, R 2 and R 3 are each independently hydrogen or a C 1 -C 6 alkyl group; and anion A represents hydroxide (OH -) or carbonate anion (HCO 3 -), wherein represents a polymer-constituting resin; R 1, R 2, and R 3 are each independently hydrogen or a C 1 -C 6 alkyl group; and anion B represents tetrafluoroborate (BF 4 -), hexafluorophosphate (PF 6 -), or bis (trifluoromethylsulfonyl) imide ((CF 3 SO 2) 2 N -); wherein the cyclic secondary amine derivative of the first step is represented by the chemical formula 3 below: wherein m and n are independently an integer of 0 to 6, Z 1 and Z 2 are each independently CH, and Z 5 and Z 6 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and wherein the dihaloalkane of the first step is represented by the chemical formula 4 below: wherein o and p are each independently an integer of 0 to 6; Z 3 and Z 4 are each independently CH; Z 7 and Z 8 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and X is Cl, Br, or I. wherein m and n are independently an integer of 0 to 6, Z 1 and Z 2 are each independently CH, and Z 5 and Z 6 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and wherein the dihaloalkane of the first step is represented by the chemical formula 4 below: wherein o and p are each independently an integer of 0 to 6; Z 3 and Z 4 are each independently CH; Z 7 and Z 8 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and X is Cl, Br, or I. wherein o and p are each independently an integer of 0 to 6; Z 3 and Z 4 are each independently CH; Z 7 and Z 8 are each independently C 1 -C 6 alkyl group, C 1 -C 6 alkoxy group, C 1 -C 6 alkenyl group, hydrogen or F; and X is Cl, Br, or I.