Abstract: Based on Xinjiang Hami Jilangde Open-pit Mine, the paper carries out analysis and optimization design for the stability of non-working slope along the dip bedded slope. Using FLAC^3D to carry out the numerical simulation of slope, it found that after the enlargement of slope, the slope displacement of horizontal and vertical direction is increase, and plastic zone linking phenomenon appears in local. The Geo-slope software is used to calculate the slope stability, and come to the conclusion that stability coefficient is less than the coefficient of safety reserve factor. Finally, the optimization scheme of "cutting slope weight loss and reducing slope angle" is proposed, and the calculation results meet the requirements.