Solidified soil is widely used in road engineering, its compressive strength is high, but its tensile strength is low, and it is easy to produce dry shrinkage cracks, resulting in strength reduction.SIn this paper, a kind of curing agent with strength self repairing ability is introduced, and its tensile (splitting) strength test is carried out.SCompared with the traditional cement stabilized soil, the splitting strength and water stability of the soil were significantly improved after adding self-healing curing agent.SAfter curing for 3 days and 7 days, cement soil and self-healing solidified soil have certain splitting strength self-healing ability. After 14 days of curing, most of the self-healing effect comes from self-healing curing agent, and the self-healing strength increases with the increase of self-healing curing agent.SThe hydration reaction of cement generates hydrated calcium silicate colloid (C-S-H). The water-borne polymer in self-healing curing agent is solidified to form a uniform molecular network structure. The two overlap each other to form an interactive space structure with higher strength and smaller porosity.