Abstract: Due to the complexity of present FCC catalyst preparation process, catalyst post-treatment technology was explored. NaY zeolite, pseudo-boehmite, aluminum sol and kaolin were mixed and spray-dried into catalyst microsphere NaY35. The basic properties of the unmodified NaY35 were characterized by XRF、XRD、BET. The NaY35 catalyst was treated by once calcination and then once rare earth ion exchange. The treated NaY35 was used as a starting precursor. The precursor was then treated by three times calcinations and three times ammonium ion exchanges at normal temperature（＜90 ℃）, and two times calcinations and two times ammonium ion exchanges at high temperature（＞90 ℃）, respectively to explore the optimized post-treatment conditions for FCC catalyst．The test results indicate that the Na2O contents in both prepared catalysts are less than 0.3% (wt).