Abiotic stress as heat stress (extreme temperatures) cause unavertable conditions for plant growth lead to increase losses in yield and poor fruit quality. The intent of this study is to focus on the role of some bio-stimulants as soil application (fulvic and humic acuids, seaweed extract and phosphoric acid) on snap bean productivity under natural heat stress. The results showed that soil application with falvic acid (1 L/fed) markedly improved snap bean plants vegetative growth behavior, minerals content and photosynthetic pigments of leaves, yield and its quality in the two seasons. The lowest values of all the above mentioned parameters were observed with the control plants as a result of heat stress damages under the experiment conditions.