In order to investigate the droplet deposition on hairy, waxy and rough plant leaves, a series of experiments were schemed with a combination of five droplet sizes of 138.2 μm, 176.5μm, 209.1 μm, 235.1 μm and 283.7 μm and six leaf dip angles of 0°, 15°, 30°, 45°, 60° and 75°. The orthogonal tests were used to analyze the cross influences among plant leaf surface structures, leaf surface dips and droplet sizes. The experiment results showed, under same spray volume, droplet deposition tended to decline with the increase of the droplet sizes in general. On the hairy structure leaf surface, a turning point turn up after which the deposition decrease was getting larger sharply when the droplet size was over 231.5μm. On hairy and rough surfaces, droplet deposition increased with the surface dip’s reducing. However, on the waxy leaf surfaces, a positive deposition mutation might take place as the surface dip exceeded 45°. The study concluted that leaf dips had more influence on droplet deposition than leaf surface structures while the droplet size made little effect on it. 