The production methods of N, N - dimethylanitine including liquid - phase and gas - phase method were introduced. Product line of 5000t/a N, N - Dimethylanitine by gas - phase method was projected. The technology process, fixed - assets investment and environment of N, N - dimethylanitine were analyzed.%介绍了液相法和气相法制备N，N-二甲基苯胺工艺路线现状。结合国内外工艺路线．设计一条气相法年产5000tN，N-二甲基苯胺生产线，并对其工艺路线，经济投资和环境等因素进行了分析。
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