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This invention proposes an aniline refining system, including a dehydration mechanism and a distillation mechanism. The discharge pipe of the crude aniline tank in the dehydration mechanism is connected to the cold-side inlet of the first condenser of the distillation column via a dehydration tower feed pump, a dehydration flow meter, and a dehydration regulating valve group. The cold-side outlet of the first condenser is connected to the feed inlet at the top of the aniline dehydration tower. The discharge outlet at the top of the aniline dehydration tower is connected to the first condenser. The condensate outlet of the first condenser is connected to the second condenser. The outlet of the second condenser is connected to the upper liquid inlet of the aniline water stripping tower. This invention allows for multiple impurity removal and purification of crude aniline, improving the refining effect and reducing energy consumption.