As a special type of soil, expansive soil can be found in almost all countries. It is very easy to induce slips in superficial layers if the cut slopes have not been supported in time. The backscarp of the landslides, the scale of which is small, usually occurs in the middle of the slopes, and seldom happens at the top of the slopes. The toe is usually arcuate in shape. In order to research the forming mechanisms of superficial slides in expansive soil regions, FLAC3D software is used to simulate the effects of cracks and fissures in superficial layers on the deformation of the slope. Meanwhile, a creep model of expansive soil slopes is analyzed. A case study and monitoring results indicate that anchor frame beams can restrain expanding of cracks and fissures, and effectively strengthen the cutting slopes in expansive soil.