Electron Multiplying Charge Coupled Devices (EMCCD) are new high-sensitivity image sensors. In recent years, EMCCD cameras are used in the field of low-light detection more widely. To use the new EMCCD in a low light camera, a low light imaging system with strong detection ability, fast data updating ability and an integrative fiber optical interface is designed. The design method of the EMCCD camera is studied mainly. The operation principle of the EMCCD is explained. The design scheme of the EMCCD low light camera based on a TC253SPD-B0 chip is presented. The performance of the integrative low light camera is verified in both an imaging experiment and a signal-to-noise ratio measurement experiment. The results show that the camera not only can implement the data transmission in a distance of more than 20 km and the frame frequency of 30 f/s, but also can implement detection under the condition of low light. It has a higher signal-to-noise ratio.