High strength steel sheet having excellent workability and method for manufacturing the same

The present invention relates to a steel sheet that can be used for automobile parts, etc., and relates to a steel sheet having excellent balance between strength and ductility, excellent balance between strength and hole expandability, and excellent bending workability, and a method for manufacturing the same. The steel sheet of the present invention contains 0.25 to 0.75 wt% of C, 4.0 wt% or less of Si, 0.9 to 5.0 wt% of Mn, 5.0 wt% or less of Al, 0.15 wt% or less of P, 0.03 wt% or less of S, 0.03 wt% or less of N, and the balance Fe and unavoidable impurities, and includes, as the microstructure, 30 to 70 vol% of tempered martensite, 10 to 45 vol% of bainite, 10 to 40 vol% of residual austenite, 3 to 20 vol% ferrite, and unavoidable structures. 본 발명은 자동차 부품 등에 사용될 수 있는 강판에 관한 것으로서, 강도와 연성의 밸런스 및 강도와 구멍확장성의 밸런스가 우수하고, 굽힘가공성이 우수한 강판과 이를 제조하는 방법에 관한 것이다.