Abstract: According to the nuclear safety criteria, the audit calculations of control rod ejection accidents forQinshang Nuclear Power Station are performed with RETRAN02 and FRAPT6 programs on CY-BER825. The initial conditions are considered, which include both zero--power and full--power condi-tions at the beginning and end of time in cycle. The accident consequences are given, and the resultscalculated show that the safety criteria are met.