The invention relates to 
medicine field, and particularly relates to an 
angiotensin II receptor antagonist valsartan dispersible tablet and a preparation method thereof. The prescription of the product comprises 
pharmaceutical adjuvants acceptable in 
pharmacy like 
valsartan bulk drug, a filler, a disintegrant, an 
adhesive, flow aid, a 
lubricant, and corrigent, and the 
dispersible tablet is prepared by a wet 
granulation method. The 
valsartan bulk drug needs to be micronized, and the 
diameter 90 is less than 75mu m, preferably, the 
diameter 90 is less than 10mu m. The size distribution of the valsartan 
bulk drug directly affects the dispersibility of the 
dispersible tablet. The valsartan has polymorphy, different 
crystal forms of valsartan have different size distribution, and the dispersibility of the valsartan dispersible tablet is more different. The size distribution of the valsartan bulk 
drug is controlled by virtue of the 
micronization technology, the 
diameter 90 is less than 75mu m, preferably, when the diameter 90 is less than 10mu m, the difference of size distribution of different 
crystal forms of valsartan bulk 
drug is eliminated, the dispersibility of the valsartan dispersible tablet is improved obviously, the 
drug dissolution rate of the valsartan dispersible tablet is improved, and the product quality is controllable and is improved remarkably.