The mechanism of zeolite crystallization has not been sufficiently elucidated. To clear the stability of chemical species in the solution of the reaction system, the composition and concentration of the solution were suddenly altered. and the variances of the solid phase were surveyed by XRD. That is, in the course of synthesis the condition of solution was stimulated by adding solution without a constituent. The chemical species such as secondary building units that may be incorporated with nucleus in the solution and the phase transition of crystals were considered.