A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode comprises an active material having a lithium ion insertion potential of 0.4V (vs Li/Li<+>) or more, a conductive agent and a current collector supporting the active material and the conductive agent. The conductive agent contains a carbonaceous material. The nonaqueous electrolyte contains first sultones having an unsaturated hydrocarbon group. A diameter distribution of pores of the negative electrode when measured by mercury porosimetry has a first peak having a mode diameter of 0.01 to 0.2 [mu]m and a second peak having a mode diameter of 0.003 to 0.02 [mu]m. A volume of pores having a diameter of 0.01 to 0.2 [mu]m and a volume of pores having a diameter of 0.003 to 0.02 [mu]m, which are measured by the mercury porosimetery, are 0.05 to 0.5 mL and 0.0001 to 0.02 mL, respectively, per g of the negative electrode excluding the current collector.