The invention discloses a method for refining spring steel through VD carbon deoxidization. The method comprises the following steps that (1) molten steel of tapped steel of a primary melting furnaceis subjected to preliminary deoxidization and alloying, and lime 3.5-4.5 kg/t steel is added in the steel tapping process; (2) after steel tapping, the VD working procedure is conducted, and vacuum carbon deoxidization treatment is conducted; and (3) after vacuum breaking, a steel ladle is put in the LF working procedure to be refined, and the refining slag basicity is controlled to be 1.5-2.0. According to the method, vacuum carbon deoxidization is sufficiently utilized, the main source of inclusions is controlled, inclusions of B and D types in the steel can be effectively controlled, and the steel quality is improved, the high-grade steel used for a spring can be produced through provided VD+LF refining technologies, and the obvious economic benefits and social benefits are achieved.