Research on the influence of some types of tablet fertilizer on the growth, development and yield of LVN99 maize variety on slopping land in Van Yen district, Yen Bai province in 2014, which included 10 treatments of tablet fertilizer (NK) and 1 control (traditional method:- top dressing). Tablet fertilizer had influenced on plant height, height of making com-cob and LAI which had upward trend based on the increase of chemical contents. However, tablet fertilizer had no dramatic influence on growing time and disease infect of LVN99. Tablets fertilizer had significant influence on theoretical yield and real yield of LVN99, treatment No.8 (150 N + 90 K2O) had the highest yield (8.84 and 5.24 tons/ha, respectively). Therefore, the most suitable treatment of tablet fertilizer was No.8, with base of 2 tons Song Gianh organic fertilizer and 90 P2O5. The economic efficiency of this treatment gained at 6.513.333 VND/ha higher than the control.