Influence of electrical joint compound on anticorrosion property of electrical contact is studied in this paper. Three metal connection samples including Al-Al, Cu-Al, Cu-Cu are selection to conduct the salt spray test. The test result shows that the anti-corrosion property of metal is improved remarkably when the electrical contact is employed, especially in Al-Al and Cu-Al contacts. Meanwhile, the contact resistance is reduced, which highly improves the reliability and the stability of the electrical contact.