An adaptable and compact fast pulse sampling module was developed for the neutron-gamma discrimi-nation. The developed module is well suited for low-cost and low-power consumption applications. It is based on the Domino Ring Sampler 4 (DRS4) chip, which offers fast sampling speeds up to 5.12 giga samples per second (GSPS) to digitize pulses from front-end detectors. The high-resolution GSPS data is useful for obtaining precise real-time neutron-gamma discrimination results directly in this module. In this study, we have implemented real-time data analysis in a field programmable gate array. Real-time data analysis involves two aspects: digital waveform inte-gral and digital pulse shape discrimination (PSD). It can significantly reduce the system dead time and data rate processed offline. Plastic scintillators (EJ-299-33), which have proven capable of PSD, were adopted as neutron detectors in the experiments. A photomultiplier tube (PMT) (model #XP2020) was coupled to one end of a detector to collect the output light from it. The pulse output from the anode of the PMT was directly passed onto the fast sam-pling module. The fast pulse sampling module was oper-ated at 1 GSPS and 2 GSPS in these experiments, and the AmBe-241 source was used to examine the neutron-gamma discrimination quality. The PSD results with dif-ferent sampling rates and energy thresholds were evalu-ated. The figure of merit (FOM) was used to describe the neutron-gamma discrimination quality. The best FOM value of 0.91 was obtained at 2 GSPS and 1 GSPS sam-pling rates with an energy threshold of 1.5 MeVee (electron equivalent).