Concrete repairing material for semirigid base of high-grade asphalt road with heavy traffic was prepared by use of rapid-setting and rapid-hardening surphoaluminate cement and special additives. The test results show that it can set and harden after about 30min, and within 4-5 h, its flexural and compressive strength can reach more than 1.0 MPa and 10 MPa respectively. The bond between the material and the old semirigid base is quite high. The material can expand a little during its hardening process. The in-site rapid-repairing of semirigid base with the material achieves a success, which means the material can meet the needs of rapid-repairing of semirigid base.