In this chapter, a novel distributed intelligent cooperative protocol with finite time regulator is proposed to coordinate distributed energy resources in islanded microgrids. The finite time frequency control strategy involving a consensus-based distributed active power controller is designed, such that the the accurate active power sharing can be achieved while frequencies of all DERs can be forced to converge to the reference value within a finite time. Then, a weighted average voltage observer based voltage control strategy containing an reactive power sharing constraints is designed, which guarantee the weighted average value of all DERs’output voltages can converge to the desired reference value. The performance analysis shows the proposed distributed intelligent cooperative protocol with finite time regulator can accurately address the issue of voltage regulation, frequency restoration, active and reactive power sharing.