Abstract: This review improved the overall performance PV system,extended the service life of the lead-acid battery and reduced the weight of traditional photovoltaic system inverter all-in-one,studied the PV charging system with inverter control.Charging controller adopted the direct current control（MPPT） algorithm and the three stages of charging control strategy with temperature compensation.Inverter adopted the improved staggered parallel flyback topology for AC voltage 220V output,in make full use of the solar array output power,on the basis of lead-acid battery charging time is shortened,the inverter produced alternating current supply load at the same time,removed the power frequency transformer,reduced the inverter volume effectively and reduced the system cost.