Here, a series of polysulfide-epoxy resins with block structures were prepared to avoid the conflict between the mechanical strength and the self-healing properties. Besides, self-healing elastomers/coatings based on these resins were prepared to investigate the factors influencing the repair efficiency and the self-healing properties in the application. Self-repair efficiency tests indicated that the best raw material resins for the elastomer is E20 epoxy resin and LP-3 polysulfide rubber (molar ratio = 2:1), and the curing agent is polyetheramine D400. In addition, the catalyst plays an important role in the repair process, and 1 wt% triethylamine is utilized to catalyze the healing reaction. Tensile tests showed that the tensile strength of the cured sample is 12.95 MPa, and the fractured sample can be repaired to 93% of original strength (repair conditions: 80 ℃,24 h). The tensile strength of the elastomer don’t decay after three times of repair. The neutral salt spray test indicated that the polysulfide-epoxy self-healing coating possesses excellent corrosion resistance and the scratched surface can withstand 72 h neutral salt spray after healing. Besides, the intact coating could withstand 168h salt spray, which has application potential.