The source of excitation of the active source repeated monitoring locates in the Xiliushui reservoir of Zhangye City，Gansu Province. The system began operating on July 9,2015，and a period of 40 days of continuous excitation experiment completed on November 10,2015. Our results reveal the air-gun source has good consistency and repeatability，and the detective system of active source can record signal clearly. The construction of active source repeated exploration projects has achieved some results，which can provide valuable experience for the research of active source repeated exploration. The observation data we obtained makes it possible to follow the temporal and spatial variations of deep structure of the Qilian mountains areas.