Fluorescence endoscopy has fundamentally changed the traditional method of diagnosing cancer. It automatically recognizes and diagnoses according to the inherent fluorescence spectrum characteristics of human tissues. It can immediately prompt the nature of the tissue to be tested. The detection sensitivity is high, the specificity is strong, and the detection rate is higher than conventional detection The method is increased by 4 to 5 times. Fluorescence endoscopy can greatly improve the detection rate of early cancer, which is worthy of extensive research and application. Fluorescence imaging devices generally include: an illumination light source section, which includes a visible light source for transmitting visible light, an excitation light source for transmitting excitation light, and a light combining prism group; an endoscopic imaging section, which includes an imaging element, and the imaging element At the same time, the reflected light and excitation light after receiving the illumination of the target position excites the fluorescence emitted by the medicine delivered to the target position; the signal processing part is used to receive the reflected light and fluorescence and process them to obtain the fusion for display image. The ZR4I camera system is the core component of the imaging part and signal processing of the fluorescent device. The ZR4I camera system can be matched with different camera modules to output 4K, 2K, and 1080p fluorescent videos with different resolutions.