Abstract: Based on an engineering example, a supporting method for a mixed high slope, which has stone retaining wall on the top and permanent slope in the middle and deep excavation at the bottom, is indroduced. According to different working conditions and by using different parameters, calculations of excavation support at the pit bottom and permanent slope support on the ground (after the backfill of excavation) should be carricel out. Supporting structures should satisfy the requirements of both temporary and permanent slopes.