with the development of computer industry revolution, single chip microcomputer as a widely used tool in the field of industrial control is indispensable.
Because there are many interference sources in the power plant, when the interference acts on the single chip microcomputer itself, the single chip microcomputer will not be able to execute the program in the normal state, thus causing confusion. Starting from the transmission line, power supply and other aspects, this paper describes the anti-interference design that should be strengthened in practical work, so as to improve the anti-interference ability and reliability of the single-chip microcomputer test system.