Abstract: To solve the use performance of cobalt-chromium alloy in the tooth department, the corrosion resistance of cobalt-chromium alloy was changed by adding aluminum oxide and zirconia ceramic phase to the cobalt-chromium alloy. The ceramic phase was 5%, two sets of alloy samples were prepared by laser rapid molding technology and their corrosion properties in population saliva were tested by electrochemical corrosion. The test results show that the corrosion resistance of alumina or zirconia oxide improve, and the corrosion resistance is better.