Aiming at the island microgird with micro-synchronous generator as the main sources of sencondary controls, a distributed secondary frequency/voltage control scheme is proposed. First, a feedback linearization method is used to design a frequency/voltage controller suitable for micro-synchronous generators, which can eliminate the frequency and voltage deviation caused by the primary control of micro-synchronous generators. Then, a distributed control scheme is proposed based on multi-agent system theory. The proposed frequency/voltage controller only needs to exchange the frequency/voltage and active power information with its neighbors, which is independent of the centralized controller and complex communication networks and improves the reliability of the microgrid. Meanwhile, the active power outputs of micro-synchronous generators can be allocated according to their rated ratios. Finally, the effectiveness of the proposed secondaty control scheme is verified on a real microgrid. This work is supported by National Key Basic Research and Development Program of China (973 Program) (No. 2013CB228205).