To get quantitative risk evaluation of Port State Control (PSC) candidate ships, PSC targeting model based on positive feedback repair model and SVM method is applied. According to the Tokyo-MOU “APCIS” information system’s PSC history data, the positive feedback repair model is established in order to obtain samples, SVM method is established in order to classify the samples, and a reasonable result is obtained in this paper. The model established and the result obtained are important references to select ships before conducting PSC inspection.