As a new type of soil reinforcement material, polymer curing agent plays an important role in slope greening and slope stability. The polymeric solidified agent reinforcement mechanism was analyzed, and the laboratory test of shear strength parameters was carried out. The aim of these works is to analyze the influence of the curing agent concentration and reinforcement thickness on slope stability under different slope conditions. The results show that the slope protection mechanism of the polymer curing agent is mainly for the consolidation of the polymer and the anchoring and reinforcement of the vegetation root system. The slope stability of polymer curing agent for different slope under the condition of the increase has a positive effect. In the same slope conditions, reinforced depth for stability is more affected by other factors than the curing agent concentration. Application of polymer curing agent to the slope engineering can promote the growth and restoration of vegetation on the slope surface, and the root reinforcement effect will be more conducive to improve the stability of the slope.