A nonaqueous electrolyte secondary battery comprises a positive electrode containing a positive electrode active material, a negative electrode, and a nonaqueous electrolyte. The positive electrode active material includes active material particles A containing a lithium-cobalt complex oxide and a lithium stannate and active material particles B containing an oxide represented by the formula (B) below. The positive electrode active material contains more than 50 weight% of the active material particles A, and satisfies the formulae (1)-(5) below. LiNi1-x-yCoxMyO2 (B) 1.4 <= (DC90/DC50) <= 2 (1) 1.4 &LE; (DC50/DC10) <= 2 (2) 1.4 &LE; (DN90/DN50) <= 2 (3) 1.4 &LE; (DN50/DN10) <= 2 (4) 1.5 &LE; (DN50/DC50) <= 2.5 (5)
