A fistula evaluation system includes an extraction device and an evaluation device. The capturing device includes a transmitting antenna, a receiving antenna, a transmitting module, and a receiving module. The transmitting module transmits a radio carrier wave to the fistula via the transmitting antenna, and the receiving module receives the radio carrier reflected by the radio carrier. And output the echo signal as a transmission signal. The evaluation device includes a differentiation processing module, a digital filter module, and a conversion recognition module. The evaluation device differentiates and digitally filters the transmission signal and converts it into a plurality of image files, and performs image recognition on the image files To output an evaluation result. In this way, the information implicit in the echo signal can be used to detect the blood flow condition of the fistula, and its implementation structure is affordable, easy to operate, and no consumables are generated. It is suitable for routine vascular access monitoring in hospitals. the way.一種瘻管評估系統，包含一擷取裝置及一評估裝置。該擷取裝置包括一發射天線、一接收天線、一發射模組，及一接收模組，該發射模組經該發射天線朝該瘻管發射一無線電載波，該接收模組接收由該無線電載波反射而成的一回波信號，並將該回波信號輸出為一傳輸信號。該評估裝置包括一微分處理模組、一數位濾波模組及一轉檔辨識模組，該評估裝置將該傳輸信號微分及數位濾波並轉換為複數圖片檔案，且對該等圖片檔案進行影像辨識以輸出一評估結果。藉此，可以利用該回波信號內隱含的資訊而達到偵測該瘻管血流狀況的效果，且其實施架構之價格實惠，操作方便，亦無耗材產生，適合作為醫院常規之血管通路監測方式。
