The switching control techniques of power converters based on switching system theory is an interesting alternative. This paper addresses a four dimensional (4D) switching linear model for three-phase voltage source converter (VSC). Based on the 4D switching model, a state-dependent switching control method is proposed for the AC current and DC voltage regulations of three-phase VSC simultaneously. The key points of the work are: (1) four system states control are realized in a single control loop with no control parameters; (2) The stability analysis process of system, which based on the solving of linear matrix inequalities (LMIs), is simplified. The simulation comparison results verify the superiority and effectiveness of proposed method.