Abstract: The working principle of the digital correlation pattern recognition (DCPR) method was introduced in this paper, and the influence of selecting different reference pulses and different starting points and ending points on the method’s n/γ discrimination quality factor (FOM) was discussed. It is found that using n as the reference pulse is better than using γ as the reference pulse. By selecting a suitable reference pulse and starting point and ending point, the FOM can reach up to 1.137.