High-strength cold-rolled steel plate and method for producing same

Provided are: a high-strength cold-rolled steel plate having excellent elongation (EL), an excellent hole expansion ratio (lambda), and a low yield ratio (YR); and a method for producing same. The high-strength cold-rolled steel plate has a component composition comprising, in mass%, 0.15-0.25% of C, 1.0-2.0% of Si, 1.8-2.5% of Mn, 0.10% or less of P, 0.010% or less of S, 0.10% or less of Al, 0.010% or less of N, and a remainder of Fe and unavoidable impurities. The high-strength cold-rolled steel plate has a composite structure comprising 30-55% by volume fraction of ferrite having an average crystal grain size of 5 [mu]m or less, 5-15% by volume fraction of residual austenite having an average crystal grain size of 2 [mu]m or less, and 30-60% by volume fraction of tempered martensite having an average crystal grain size of 2 [mu]m or less. The high-strength cold-rolled steel plate is configured so that 10 or more pieces of the residual austenite are present in 1000 [mu]m2 thereof.