This experiment was carried out during two successive seasons (2021 and 2022) to study the influence of different stimulative substances (Proline at 150 ppm, Fulvic acid at 50 ppm, Glutamic acid at 500 ppm, Nano- chitosan at 50 ppm and potassium Silicate at 1000 ppm) with two types of planting density (normal 5*6 m and intensive (3*5 m) and their interactions on productivity and fruit characteristics of 21 years old of Toffahi olive trees grown in saline sandy soil and irrigated with a drip system in a private orchard located at Fayed city, Ismailia, Egypt. The results showed that spraying trees with nano-chitosan or potassium silicate enhanced fruit physical characteristics (fruit and pulp weight, fruit dimension, fruit hardness and dry matter). Whereas, trees treated with nano-chitosan or proline recorded the highest productivity in both seasons. In addition, fulvic acid acquired the highest ripening degree (coloring index) .Conversely in the fruit chemical properties, no apparent effect of treatments from1st season to 2nd season in each of acidity and proline. As for to the type of planting density effect, it obviously superiority of normal plant density.