A colonoscopy image computer-aided recognition system includes a bowel preparation evaluation module for evaluating a bowel preparation scale shown in a colonoscopy image, in order to categorize the colonoscopy image into a clear image or a dirty image; and a convolution neural network module for analyzing a preprocessed image from the clear image, in order to obtain a plurality of intestine features of the preprocessed image from the clear image, thereby recognizing a cecum image or a non-cecum image.一種大腸鏡影像電腦輔助辨識系統,包括:一腸道準備評量模組,其評量一大腸鏡影像所顯示的一腸道準備狀態,以分類出一清楚影像或一劣質影像;及一卷積神經網路模組,其分析來自該清楚影像的一預處理影像,以獲得該預處理影像的多個大腸特徵,進而辨識一盲腸影像或一非盲腸影像。