A nonaqueous electrolyte battery comprising: a positive electrode; a negative electrode; and a nonaqueous electrolyte, wherein the negative electrode comprises active material particles containing a niobium-titanium composite oxide and an active material-containing layer containing the active material particles, wherein the active material particles comprise a first active material particle, and a second active material particle located with a space between the first active material particle and the second active material particle, and when a third line segment connects a midpoint of a first line segment which is brought into contact with the first active material particle and the second active material particle and does not cross the space to a midpoint of a second line segment which is brought into contact with the first active material particle and the second active material particle and does not cross the space, the space satisfies the following formulae to: 0.8 ≤ a / b ≤ 1.2 0.8 ≤ a / c ≤ 1.2 0.8 ≤ b / c ≤ 1.2 where a is a length of a line segment A, which is a shortest distance between the first active material particle and the second active material particle at a position of 50% of a length of the third line segment; b is a length of a line segment B, which is a shortest distance between the first active material particle and the second active material particle at a position of 10% of the length of the third line segment; and c is a length of a line segment C, which is a shortest distance between the first active material particle and the second active material particle at a position of 90% of the length of the third line segment, wherein a number of 0.1% to 95% of the active material particles, relative to a total number of the active material particles existing on a 30 μm × 30 μm area of a scanning electron microscope image of the active material-containing layer, exist in a broken state resulting from a load having been applied to the active material particles. a positive electrode; a negative electrode; and a nonaqueous electrolyte, wherein the negative electrode comprises active material particles containing a niobium-titanium composite oxide and an active material-containing layer containing the active material particles, wherein the active material particles comprise a first active material particle, and a second active material particle located with a space between the first active material particle and the second active material particle, and when a third line segment connects a midpoint of a first line segment which is brought into contact with the first active material particle and the second active material particle and does not cross the space to a midpoint of a second line segment which is brought into contact with the first active material particle and the second active material particle and does not cross the space, the space satisfies the following formulae to: 0.8 ≤ a / b ≤ 1.2 0.8 ≤ a / c ≤ 1.2 0.8 ≤ b / c ≤ 1.2 where a is a length of a line segment A, which is a shortest distance between the first active material particle and the second active material particle at a position of 50% of a length of the third line segment; b is a length of a line segment B, which is a shortest distance between the first active material particle and the second active material particle at a position of 10% of the length of the third line segment; and c is a length of a line segment C, which is a shortest distance between the first active material particle and the second active material particle at a position of 90% of the length of the third line segment, wherein a number of 0.1% to 95% of the active material particles, relative to a total number of the active material particles existing on a 30 μm × 30 μm area of a scanning electron microscope image of the active material-containing layer, exist in a broken state resulting from a load having been applied to the active material particles.