The purpose of the present invention is to provide a cold rolled steel sheet having excellent bending workability, and a method for producing same. This cold rolled steel sheet: has a constituent composition that contains, in terms of mass%, 0.010-0.035% of C, 0.1% or less of Si, 0.35% or less of Mn, 0.035% or less of P, 0.02% or less of S, 0.010% or less of N, 0.005-0.03% of Al and 0.0001-0.005% of B, with the remainder comprising Fe and unavoidable impurities; has a structure in which the average ferrite grain diameter is 20 μm or less; is such that BN and AlN are precipitated in such a way that the condition represented by formula (1) is satisfied; and has an n value of 0.15 or higher in a 5-10% strain region. 0 < [BN] / [AlN] ≤ 0.5 (1) (Here, [BN] and [AlN] denote the number density of BN and AlN, expressed using the same unit of measurement.)