The invention discloses a DSP-based multilevel H-bridge power matched inverter and a simulation method thereof. The inverter comprises a photovoltaic cell module, a cascaded H bridge and a DSP control module; the photovoltaic cell module includes three photovoltaic cells; the three photovoltaic cells are respectively connected with three H bridges of the cascaded H bridge; the DSP control module includes a sampling module, a DSP core board and an ePWM module; the cascaded H bridge is connected with the sampling module; the sampling module is connected with the DSP core board; the DSP core board is connected with the ePWM module; and gate levels of the three H bridges respectively receive three paths of ePWM signals generated by the ePWM module. According to the DSP-based multilevel H-bridge power matched inverter and the simulation method thereof disclosed by the invention, the unmatched control, easily occurred by the inverter under a special environment, for a transmission power of each of the H bridges in the prior art is solved.