[en] The sol dispersion process controlling methods used in different Sol-Gel technologies natively and abroad as well as the effects of these methods to the size distribution advancement so as to enhance the size qualification rate have been stated. The advantages and disadvantages as well as the final results of different controlling methods have been compared. The method of two-fluid nozzle with vibration is considered as an effective method for the controlling of sol dispersion process. The feasibility of using single-fluid nozzle with vibration to control sol dispersion process so as to improve the size distribution of fine nuclear fuel microspheres has been discussed