Abstract: The selection of Hy-line brown eggs parent generation of cock 32,were randomly divided into 2 groups,each with two repeat. In the diet, respectively add 0 mg/kg and 667 mg/kg anti-stress agent to enhance the thermal breeder anti-stress capabilities. Research in the production of hot and humid summer conditions, the reference to the cost of production factors, anti-stress agent on egg intake of rooster and the quality of semen.The results show that： Effect of Anti-stress agent on breeder roosters intake, the volume of semen,the vitality of sperm have different levels of advancement and improvement.