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AgCuOSnO₂ electrical contact materials with different SnO₂ contents were prepared by reaction synthesis. In this paper, FQR-7501 eddy current conductivity meter is used to measure the conductivity of the polished AgCuOSnO₂. The erosion morphology of the surface of the AgCuOSnO₂ electrical contact is observed and studied by Scanning Electron Microscope (SEM). The JF04C DC digital resistance tester is used to carry out 10000 dot tests. The results show that the contact resistance of AgCuO(10)SnO₂(5) and AgCuO(10)SnO₂(8) electric contact materials is lower than 1.3mΩ at U = 12V and I = 15A, and the fluctuation is the smallest; when I = 10A, the welding force of AgCuO(10)SnO₂ (x, x = 2,5,8) is less than 8cN, and the welding force of AgCuO(10)SnO₂(5) electric contact is small and stable when the current increases; when the arc erosion of AgCuOSnO₂ electric contact materials occurs, the material transfer way is from anode to cathode. With the increasing of SnO₂ content, the loss in the process of material transfer is restrained and reduced. There are little pores and microcracks on the surface of the transferred electrical contact, and the surface morphology is relatively flat.