Abstract: Amodel for the crystal growth of molecular sieve zeolite in the system of non-spontaneous nucleation was developed on the basis of the liquid-phase mechanism. 27 curves of crystal growth of L, Ω and ZSM-5 type zeolites were calculated by using the method of computational mathematics. The fact that the calculated curves are consistent with the experimental values shows clearly that the model is of values to explain the process of crystal growth of zeolites, particularly, the stage at the end of crystal growth (the previous other models can not explain experimental curve at this stage). At the same time, some parameters concerned are discussed.