The inverter is one of the core equipment in a photovoltaic system. To improve the reliability and stability of the inverter, to obtain an ideal sinusoidal output voltage and to optimize the performance of the inverter, a novel two-buck PV inverter is proposed in this paper. The DC / AC inverter principle and the control scheme are discussed. The fixed-width two-state ring adjustable hysteresis current control strategy is adopted. The paper gives an in-depth analysis of a two-state hysteresis current control of inverter, the inverter input-output relationship, the use of the double-loop control of the basic design of hysteresis current control method. Matlab simulations show that the control strategy is simple, and the effective use of the control system will bring about a good steady-state and the dynamic characteristics of the output voltage waveform are good, which would enjoy a practical value.