A non-aqueous electrolyte solution for a lithium secondary battery, comprising: an amide compound of formula; an ionizable lithium salt; and an organic solvent: wherein R, R 1 and R 2 are each independently any one selected from the group consisting of hydrogen, halogen, C 1-20 alkyl, alkylamine, alkoxy, alkoxyalkyl, alkenyl and aryl groups, and at least one of R 1 and R 2 is represented by CH 3 -(CH 2)p-O-(CH 2)q-where p is an integer of 0 to 8 and q is an integer of 1 to 8, and X is any one selected from the group consisting of carbon, silicon, oxygen, nitrogen, phosphorus, sulfur and hydrogen, in which i) m is 0 when X is hydrogen, ii) m is 1 when X is oxygen or sulfur, iii) m is 2 when X is nitrogen or phosphorus, and iv) m is 3 when X is carbon or silicon characterized in that the non-aqueous electrolyte solution comprises a cyclic sulfate, wherein the cyclic sulfate is present in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the total weight of the non-aqueous electrolyte solution, and wherein the cyclic sulfate is present in an amount of 1 to 20 parts by weight based on 100 parts by weight of the amide compound. an amide compound of formula; an ionizable lithium salt; and an organic solvent: wherein R, R 1 and R 2 are each independently any one selected from the group consisting of hydrogen, halogen, C 1-20 alkyl, alkylamine, alkoxy, alkoxyalkyl, alkenyl and aryl groups, and at least one of R 1 and R 2 is represented by CH 3 -(CH 2)p-O-(CH 2)q-where p is an integer of 0 to 8 and q is an integer of 1 to 8, and X is any one selected from the group consisting of carbon, silicon, oxygen, nitrogen, phosphorus, sulfur and hydrogen, in which i) m is 0 when X is hydrogen, ii) m is 1 when X is oxygen or sulfur, iii) m is 2 when X is nitrogen or phosphorus, and iv) m is 3 when X is carbon or silicon characterized in that the non-aqueous electrolyte solution comprises a cyclic sulfate, wherein the cyclic sulfate is present in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the total weight of the non-aqueous electrolyte solution, and wherein the cyclic sulfate is present in an amount of 1 to 20 parts by weight based on 100 parts by weight of the amide compound. wherein R, R 1 and R 2 are each independently any one selected from the group consisting of hydrogen, halogen, C 1-20 alkyl, alkylamine, alkoxy, alkoxyalkyl, alkenyl and aryl groups, and at least one of R 1 and R 2 is represented by CH 3 -(CH 2)p-O-(CH 2)q-where p is an integer of 0 to 8 and q is an integer of 1 to 8, and X is any one selected from the group consisting of carbon, silicon, oxygen, nitrogen, phosphorus, sulfur and hydrogen, in which i) m is 0 when X is hydrogen, ii) m is 1 when X is oxygen or sulfur, iii) m is 2 when X is nitrogen or phosphorus, and iv) m is 3 when X is carbon or silicon characterized in that the non-aqueous electrolyte solution comprises a cyclic sulfate, wherein the cyclic sulfate is present in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the total weight of the non-aqueous electrolyte solution, and wherein the cyclic sulfate is present in an amount of 1 to 20 parts by weight based on 100 parts by weight of the amide compound.