As a new type of photoelectric detector, solid-state photomultiplier (SSPM) has wide applications. The peripheral circuit including pre-amplifing circuit and power circuit are researched and designed. The feasibility of amplifying circuit is verified by software simulation and the feedback capacitance parameter is optimized to gain optimal circuit performance. To realize the miniaturization and simplicity, the power circuit is designed and made. Experimental results show that the mean output voltage is 30.4 V and meets the design requirements.