Slope failure very likely occur if the deformed temporary slopes with cataclastic structure were not treated immediately, but cataclastic slope requested exigent support and the cost was also an important factor in the enginneering, these increased the treatment difficulties. The paper took the case of a cataclastic temporary slope on Dadu River, based on the characteristic of cataclastic temporary slope, treatment model was selected and the effects of working sequence of slope treatment were analyzed. Displacement monitoring in slope was made in first time and according to the feedback information, treatment scheme was adjusted with wire-netting shotcrete, prestressed anchorage cable, reinforcing steel bar piles and drainage engineering. Verification by numerical calculating and monitor data showed the treatment scheme was economy and applicable.