The present invention discloses an oral image analysis system which includes an image capturing device and a first platform. The image capturing device generates a first image. The first platform includes a first processing device and obtains the first image from the capturing device. The first processing device determines which position of the oral does the first image correspond to, and obtains several classifiers and several weight values corresponding to the classifiers. The first processing device may select a second image corresponding to a possible lesion area from the first image, and generates an analysis result according to the classifiers, the weight values and the second image.本發明提供了一種口腔影像分析系統，其包括一影像擷取裝置以及一第一平台。影像擷取裝置會產生一第一影像。第一平台包括一第一處理裝置，且會從上述影像擷取裝置取得上述第一影像。上述第一處理裝置會判斷上述第一影像對應到口腔之一位置，並根據上述位置，取得複數分類器和取得對應上述複數分類器之複數權重值。上述第一處理裝置會從上述第一影像中選取對應一可能病變區域之一第二影像，並根據上述複數分類器、上述複數權重值以及上述第二影像產生一分析結果。
