The new financial environment reveals new risks that make the uncertain profitability of banks and the occurrence of systemic risk resulting from the bankruptcy of several banks. Share the data provided by the National Bank of the DRC, the supervisor can detect banks of fragility signs by comparing the ratios calculated for each of them to set prudential standards and classifying them, taking into account the risks. So it can expedite inspections and take corrective actions that impose and help redress the situation if not close unprofitable banks. This is the mission that we assign to our study and propose to the Congolese supervisor of banks. The question that arises is what is the consistent methodology select and recommend to the Central Bank of Congo to enable supervision to achieve its objective to detect weak banks. The selected Promethee Visual (because we are in the storage problem) in our study, using 10 banks supervised by the Congolese central bank and accepted for clearing (like shares) and the 5 criteria (capital, assets, management, earnings and liquidity) shows First Bank Corporation (FBC = B10), CITIBANK (B10), trade and development bank (BCD = B8) are managing their banking risks. Banks to watch are the Congolese Union of Banks (UCB = B2), the international credit bank, the International Bank for Africa in Congo (BIAC = B3), the Commercial Bank of Congo (BCDB = B1). Finally, the Congolese foreign trade bank (BCCE = B9), the Congolese FSB (B7), and finally the STANBIC (B6) are high-risk banks. Our study shows that the supervisor Multi-method provides a consistent procedure in assessing the performance and risk of Congolese Banks.