Abstract: We were able to achieve a strict separation of processes of nucleation and growth for the crystallization of L-type zeolite over a considered range by adding crystal seeds of L-type zeolite in initial gel. The kineticsof crystal growth of L-type zeolite obeys a kinetic law of order 2/3. Notonly were reported influences of various parameters on the crystal growth rate, but also the apparent activation energy of growth of L-type zeolite was obtained. Based on the experimental results, a model for the explanation of crystal growth of L-type zeolite is developed.