In this paper, a general type-II (GT2) fuzzy system (GT2-FLSs) is suggested to cope with demand response problem and dynamic uncertainties in frequency regulation problem of microgrids (MGs). The rules of GT2-FLSs are tuned such that the stability to be guaranteed under variation of load, demand response, variable wind speed and solar power. The suggested is applied on a MG and it is demonstrated that the our method results in good and robust regulation performance.