Based on the detailed geological investigation of the debris flow gully in Qianhuoshiling village, the stone landslide masonry dam for the debris flow control was designed; the stability of dam was calculated to learn the related parameters, the anti-slide stability coefficients and anti-overturning stability & foundation stability under three kinds of design condition. By the design and implementation of the program, the influence of the debris flow could be effectively weakened to protect the safety of life and property of the villagers.