The vertical distribution of eggs, nymphs, and adults of silverleaf whitefly (SLWF), Bemisia argentifolii, was stage-specific on cucumber. Adults and eggs appeared at upper leaves, while the 1st and the 2nd instar nymphs and the 3rd and the 4th instar nymphs appeared at middle and lower leaves, respectively. Feeding and eggs laying behavior of whitefly females may be the reasons causing the females to aggregate on upper leaves. The spatial distribution pattern of B. argentifolii was aggregated and was determined by Taylor’s Power Law (a: 0.401, b: 1.257) and Iwao’s Mean Crowding Regression (α: 1.325, β: 1.090). Population densities of SLWF was significantly depended on temperature during the period of October ~ May, but not in summer season (June ~ September). Weekly precipitation did not positively influenced the densities of B. argentifolii.