Water availability is a key limiting factor for plant growth. The use of super-absorbent polymers (SAPs) is an effective solution to water availability in the soil, and also recently, salicylic acid (SA) as a plant growth regulator has been proposed to reduce the negative effects of various stresses. The present study aims to evaluate the effect of super absorbent polymer, salicylic acid and, drought stress on morphological, physiological, yield and root quality of sugar beet. For this purpose, an experiment was conducted in a farm located at 120 km west of Isfahan province in Ghahriz district of Frieden city in 2017. The experimental design was split-factorial in a randomized complete block with three replication. The main factor consisted of irrigation treatments at three levels (50, 70 and 85% of water available) and factorial sub plots included of SAPs (Aquasorb) at three levels (0, 30 and 50 Kg ha -1 ) and foliar spray of SA concentration at three levels (0, 0.6 and 1.2 mM). The results of the experiments showed that severe drought stress reduced the content of chlorophyll, carotenoid, crown diameter, root yield, white sugar yiled and sugar yield, while the MDA, H 2 O 2 content, antioxidant activity, Na and N concentrations, and also molasses sugar content and white sugar content was increased. However, SA and SAPs improved qualitative traits of sugar beet. By increasing the activity of antioxidant enzymes, they reduced the toxic effects of free radicals and decreased the peroxidation of membrane lipids. Also, foliar spraying 1.2 mM SA increased the proline uptake by 8% and the use of 50 Kg ha -1 SAPs resulted in a 6% decrease in proline. Foliar spraying 1.2 mM SA and applying 50 Kg ha -1 SAPs increased 29, 32 and 34% root yield, sugar yield and white sugar yield under treatment of 85% available water of the plant compared to the control treatment in stress level. Given the results of this study, it can be concluded that root yield in severe drought stress was reduced to a level that the higher sugar content than non-stress treatment could not compensate for the low root yield and the plant did not have the potential to produce white sugar yield and therefore under severe tension, sugar levels dropped. Therefore, given water scarcity, the necessity of using optimal water consumption strategies under drought stressconditions, such as foliar application SA at 1.2 mM, and the use of SAPs Aquasorb at 50 Kg ha -1 , with effect on physiological and biochemical effects can reduce the negative effects of drought stress. Keywords : Growth regulators, enzyme activity, growth regulators, peroxidation of membrane lipids, photosynthetic pigments and white sugar yield.