Abstract: WT5”B1:The aplication of deephole loosening controlled blasting under complicate environment at Xuehuashan Section of shengli road in Bengbu City is introduced. According to the characteristics and environment of this engineering project thorugh optimumly selected appreciative parameters of loosening blasting and slope smooth blasting, using a closed blasting network of in hole and out hole millisecond delay,controlling the every delayed detonating change and taking effective safety operations,the blasted flying rocks and blasting vibration have been controlled successfully.