A nonaqueous electrolyte secondary battery comprising a positive electrode , a negative electrode , and a nonaqueous electrolyte, wherein the positive electrode includes a positive electrode current collector and a positive electrode active material layer supported by the positive electrode current collector , the positive electrode active material layer has a multilayer structure including a positive electrode lower layer , and a positive electrode upper layer disposed at a position farther from the positive electrode current collector than the positive electrode lower layer , the positive electrode lower layer includes a first positive electrode active material including a first Ni content lithium complex oxide 1A containing 70 mol% or more of nickel relative to metal elements other than lithium, the first Ni content lithium complex oxide has a porosity of less than 2%, the positive electrode upper layer includes a second positive electrode active material including a second Ni content lithium complex oxide containing 70 mol% or more of nickel relative to metal elements other than lithium, and a covering element including at least one kind of element among elements that belong to Group 6 or Group 13 and attached to the second Ni content lithium complex oxide , the second Ni content lithium complex oxide is a secondary particle in which primary particles are aggregated, the second Ni content lithium complex oxide has a porosity of 2% or more and 20% or less, in the second Ni content lithium complex oxide , a larger space than an average cross-sectional area of the primary particles does not exist inside the secondary particle in a cross-sectional observation image observed with an electron microscope, and the covering element is contained by 0.5 mol% or more and 3 mol% or less when a total of metal elements of the second Ni content lithium complex oxide is 100 mol %, wherein the porosity is measured according to the description. a positive electrode , a negative electrode , and a nonaqueous electrolyte, wherein the positive electrode includes a positive electrode current collector and a positive electrode active material layer supported by the positive electrode current collector , the positive electrode active material layer has a multilayer structure including a positive electrode lower layer , and a positive electrode upper layer disposed at a position farther from the positive electrode current collector than the positive electrode lower layer , the positive electrode lower layer includes a first positive electrode active material including a first Ni content lithium complex oxide 1A containing 70 mol% or more of nickel relative to metal elements other than lithium, the first Ni content lithium complex oxide has a porosity of less than 2%, the positive electrode upper layer includes a second positive electrode active material including a second Ni content lithium complex oxide containing 70 mol% or more of nickel relative to metal elements other than lithium, and a covering element including at least one kind of element among elements that belong to Group 6 or Group 13 and attached to the second Ni content lithium complex oxide , the second Ni content lithium complex oxide is a secondary particle in which primary particles are aggregated, the second Ni content lithium complex oxide has a porosity of 2% or more and 20% or less, in the second Ni content lithium complex oxide , a larger space than an average cross-sectional area of the primary particles does not exist inside the secondary particle in a cross-sectional observation image observed with an electron microscope, and the covering element is contained by 0.5 mol% or more and 3 mol% or less when a total of metal elements of the second Ni content lithium complex oxide is 100 mol %, wherein the porosity is measured according to the description. <EOS>