As many governments and companies invested in the open spaces which called as outdoor that may benefit economical, climate is one of the important factors that have been considered when developing in any city consider as arid environment. Therefore, as many outdoors jobs in industrial sectors, the importance of study the ergonomics in the aide environment outdoor has been increased .The focused side of this research is to show some studies and analysis’s the relation between the arid environment in outdoor and the human behaviors and their performance. The observations from the selected studies proved that performance of the worker decreased with as there is increased in the temperature in the arid environments.