There is provided a nonaqueous electrolyte solution for the sodium secondary battery including a sodium salt, a compound having a sulfur-oxygen bond, and a nonaqueous solvent in which an amount of the compound having the sulfur-oxygen bond is in a rage of 0.05% by weight or more and 10% by weight or less with respect to the nonaqueous electrolyte solution. According to the present invention, the nonaqueous electrolyte solution for the sodium secondary battery and the sodium secondary battery which have excellent charge-discharge cycle characteristics can be provided and is useful industrially.