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The HL-2M Tokamak first plasma discharge experiment has certain requirements for plasma visualization diagnosis. The visible light imaging system is one of the key diagnostics, which plays a very important role in the initial plasma discharge. This research uses HL-2M as the platform to design and develop a set of visible light imaging diagnostic acquisition system. This system has two sets of imaging diagnostics, tangential and wide-angle, which can intuitively and accurately analyze the plasma evolution in the discharge process, including plasma breakdown, Sustain, rupture, and plasma interacts with the wall. The two sets of diagnostics of the system carry out the imaging and transmission of plasma visible light radiation through the lens and the image transmission fiber bundle, and use the Lumenera Lt425C camera as the acquisition and control core. The remote server controls the local and transmits to the database as the control mode. The control software adopts the VC++ multi-threading technology and the image processing technology of the OpenCV software library, which can collect real-time visible light images and perform image playback after the discharge ends. At the same time, the system With color calibration, it can restore the true operating state of the device under complex conditions. The system has a parameter configuration function, supports changing parameters between shots, adapts to physical experiments in various situations, and has a certain degree of portability. The development of this system can meet the basic requirements of the operation during the initial plasma discharge of the HL-2M device, and has achieved good results during the initial plasma discharge of the HL-2M, providing a solution for subsequent promotion to other devices.