Abstract: The evolution of “zai” and “zhe” are paralleled,both going through the process of grammar influence from verb to proposition to tense auxiliary word to tone auxiliary word gradually.The syntax position and pragmatic influence provide situations for them.Their differences result from the restriction of original meaning of “zai” and “zhe”.The rise and fall of  “zai” and “zhe” are the results of regulating of language itself.

Key words: &ldquo, zai&rdquo, ；&ldquo, zhe&rdquo, paralleled grammar evolution, evolution mechanism