The severe accident, induced by small-break lost-of-coolant accident (SBLOCA) in Qinshan NPP Unit 1, is analyzed by a NPP severe accident simulator developed in this laboratory, based on SCDAP/RELAP5 and PROSYS. By employing the results of USA SAN ONOFRE NPPs IPE and SURRYs PSA, to end the core damage progression and mitigate the consequences of SBLOCA, the primary feed-and-bleed measures for the management of the severe accident induced by SBLOCA is selected, which is verified through the calculation by using the simulator. The results suggest that implementing the feed-and-bleed measures could be available and an effective way to arrest the SBLOCA sequences in Qinshan NPP unit 1.