Abstract: With the investigation on the computer based procedure（CBP） system for international and domestic PWR nuclear power plants, a computer based emergency operation procedure system had been developed for M310 NPP, depending on the characteristics of analog MCR in M310 NPP.This paper addresses the general method of the CBP system and presents the application of CBP system in the case of a M310 NPP. Based on the evaluation of the visual auditory cognitive psychomotor（VACP） human factor model, it is found that the total value of the CBP system is 11.0%lower than that of paper documents. The study indicates the CBP system can effectively reduce the occupancy of operators’ attention, and thus improve the human performance.