Abstract: The brick-concrete building is usually middle-low layer building and the proportion of its height with width is not big,and its bulk property is not good.According to the design feature of this building,the delay-time and parameter of demoletion was choosed reasonably,formed the overrall direction detection and the tendency of the partial direction detection;Taked the effective measures,reduced the blasting rock-fly,decreased the blasting vibration and blasting dust; The five brick-concrete buildings were demolished successfully under the complex enviroment.The experience can be referred by similar blasting demolition engineerings.