Temperature and time are important factors which influence the synthesis ofnano-zeolite NaX. The obtained results from XRD, SEM, TEM and BET showed that at low crystallizing temperature, nano-zeolite NaX has small particle size but low crystallinity. The aging and crystallizing time was investigated between 0 to 144 hours and 6 to 96 hours, respectively. The best sample with the highest crystallinity and the smallest particle size was aged in 96 hours and crystallized at 80°C for 12 hours.