Abstract: The Computerized Alarm Procedure is one of most important operating procedures in the NPP,and it will be used in the Digital Control System（DCS system）.The alarm will be trigged when the NPP operation parameters overstep the normal operation,the equipments statuses are different with the currently operating status,equipments failures and system equipments are inoperable,and so that the unit degraded status could be avoided.Based on the feedback from building NPP computerized alarm procedures validation process and validation results,this paper describes the general validation process in the computerized emergency procedures.By using this validation process,the correctness of alarm procedures drafting and computerized alarm procedures design can be ensured,and the requirements on NPP safe operation can be satisfied.