Desalination mechanism of electrodialysis is explained in this paper. Influ-ential factors for desalination used by electrodialysis are discussed. Automatic water puri-fier is developed.

• 本文论证了电渗析脱盐机理；探讨了影响电渗析脱盐的诸多因素；自行开发出全自动纯水器.