The invention discloses a digital monitoring system suitable for a light module controller and an implementation method of the digital monitoring system. The digital monitoring system comprises a user read-write access interface, the light module controller and a laser device controller, the user read-write access interface is communicated with the light module controller, the laser device controller is connected with the light module controller, and the light module controller mainly comprises an inter-integrated circuit (IIC) hardware interface, a flash read-write unit, a data storage output unit, a data processing and protocol implementation unit, an access permission control unit, a monitoring parameter measurement unit, a parameter internal calibration unit, an external drive management unit, a control data output interface, a timing interrupting service unit and a temperature compensation unit. According to the digital monitoring system suitable for the light module controller and the implementation method of the digital monitoring system, an embedded system design is utilized, functional unit segmentation is performed for the light module controller, and each unit uses simple and effective algorithm and function design, and thereby a simple and efficient light module digital diagnostic control system is formed by combining the external series laser device controller and the user read-write access interface.