The invention provides a digital signal transmission endoscope system including a detection tube, a high-definition image capture unit, a light module, a signal transmission unit, and an image processing unit. The high-definition image capture unit is disposed in the hollow body of the detection tube, and the high-definition image capture unit includes a lens and a digital image sensing module. The digital image sensing module generates a digital image signal from the lens. The light module is disposed around the lens to provide a light source. The signal transmission unit is also disposed in the hollow body of the detection tube and connected to the high-definition image capture unit. The image processing unit includes an analysis module and a display module. The analysis module is used to analyze the digital image signal to generate an image output signal. The display module displays a detection image according to the image output signal.本發明提供一數位訊號傳輸之內視鏡系統,包含一探測管、一高畫素影像擷取單元、一發光模組、一數位訊號傳輸單元以及一影像處理單元。影像擷取單元位於探測管的中空管體內,該高畫素影像擷取單元具有一鏡頭以及一數位感光模組,發光模組位於該鏡頭周圍,用以提供一光源,該數位感光模組透過該光源產生一數位影像訊號,數位訊號傳輸單元亦位於探測管的中空管體內,且連接於該影像擷取單元;影像處理單元具有一分析模組以及一顯示模組,分析模組對數位影像訊號進行分析處理後產生一影像輸出訊號,顯示模組對應影像輸出訊號顯示一檢測影像。