A negative electrode, whose tensile strength is 15 N/cm or lower when the percentage elongation in the longitudinal direction is 1%, is used in a non-aqueous electrolyte secondary battery including: a flat electrode group 10 including a positive electrode, the negative electrode and a separator; and a non-aqueous electrolyte, which are housed in a prismatic battery case. This negative electrode includes a negative electrode current collector and a negative electrode active material layer which includes: (1) a negative electrode active material which expands and contracts by absorbing and desorbing lithium ions; (2) a rubber binder whose thermal decomposition temperature is equal to or higher than the softening temperature of the negative electrode current collector; (3) a water-soluble polymer A whose thermal decomposition temperature is equal to or higher than the softening temperature of the negative electrode current collector; and (4) a water-soluble polymer B whose thermal decomposition temperature is equal to or higher than the softening temperature of the negative electrode current collector and whose degree of swelling relative to the non-aqueous electrolyte is lower than that of the water-soluble polymer A. Formed on the surface of the negative electrode active material is a coating layer including the water-soluble polymer A.