Vines were located by using DGPS technology and sprayed with a solution mixed with water and Rhodamine-B instead of pesticide by air-diffusion sprayer. The Vine Leaf Samples in height and depth direction and Cotton Fabrics Samples in vine height direction and ground width direction were taken to measure the quantity of spray deposits and calculate the area of Vine Leaf. Also, the distribution curves and map were derived. Results indicated that the distribution of spray deposits varied very much in vines: most of the spray deposits distributed at the height of 500-700mm, and decreased in turn if higher or lower; as for luxuriant vines, the quantity of deposits decreased along the depth direction, but for the vines with sparse leaves, the middle part along the depth direction contained the most spray deposits; the quantity of spray deposits on the ground was very little. The results had great positive significance in choosing and adjusting vine spray instruments, and in the guidance of pesticide accurate spray in precision viticulture