Because there possibly lies voltage harmonics pollution in microgrids, it benefits to reduce system cost if inverters have compound functions of voltage harmonics suppression and electrical energy conversion. Moreover, when multi inverters operated parallel in the mircogrids, they are expected to share the power proportionally according to their capacities. In this respect, frequency dividing droop control strategy and inverter’s virtual output impedance shaping technology are quite attractive methods to achieve this goal. In this paper, firstly inverter grid-connected model containing the harmonics components is built and voltage harmonics suppression principle is introduced. Then, the method of making inverters’ output impedance resistive is discussed. Subsequently, with droop control theory, design of frequency dividing droop controller within fundamental and harmonic frequencies fields is presented out. At the last part of this paper, with PSCAD simulation tool, validity of proposed method is proved and satisfied performances are obtained in the respects of not only harmonics suppression but also proportional load sharing according to its capacity.