Aiming at the problem of landslide collapse in the foundation pit slope of the bank protecting structure in the waterway regulation engineering,taking the waterway regulation engineering of a route in northern Zhejiang Province as an example,the stability of the slope of this project is compared and analyzed by using the traditional article points method based on the traditional limit equilibrium theory and the numerical simulation FLAC3D method.The FLAC3D method is more perfect than the article points method in terms of analysis conditions and more reliable in theory.It can also analyze area of the slope in detail for targeted prevention.The calculation theory of article points method is ideal,and the result is conservative.