Two field experiments were conducted in Sakha Research Station, Kafr El-Sheikh, Agricultural Research Center during 2002/2003 and 2003/2004 seasons to investigate the effect of boron and molybdenum fertilizer levels on yield and quality of some sugar beet varieties. This study included 27 treatments which were the combination between three sugar beet varieties (Montebianco, Kawemira and Gloria), three boron fertilizer levels (zero, 0.50 and 1.00 kg 8/fed) and three levels of molybdenum fertilizer levels (zero, 0.25 and 0.50 kg Mo/fed). Treatments were arranged in a split plot design with three replications. Varieties were allocated in the main plots and the combination between levels of boron and molybdenum were assigned at random within the sub-plots. Results could be summarized as follows: Montebianco variety surpassed in root dimensions, root and top yields over the other varieties in the two seasons and their combined data. In both seasons and the combined data, respectively, appling 1.00 kg B/fed significantly increased root dimensions as well as sugar yield by 8.6 %, 9.7 % and 7.37 % and top yield by 13.83 % and 20.12 % over the control by increasing the level of boron to 0.50 and 1.00 kg B/fed in both seasons and the combined data, respectively. Appling 0.50 kgMo/fed significantly increased root dimensions as well as top and root fresh weight/plant as well as root yield by 6.17, 5.57 and 5.85% and sugar yield by 16.81, 14.53 and 15.79% and top yield by 11.82 and 23.30% by increasing the level of boron to 0.50 and 1.00 kg Bffed over the control.