“不”和“没”是现代汉语中出现频率比较高的否定副词,它们的意义相近,使用环境相似,但在实际的语言学习中却存在诸多的差异。本文试从“不”和“没”的分布特征、语义特征和语用环境三个方面来探析的区别。 “No ” and “No ” are the negative adverbs that appear frequently in modern Chinese. They have similar meanings and similar operating environments, but there are many differences in the actual language learning. This paper attempts to explore the differences between the distribution features, semantic features and pragmatic environments of “no ” and “no ”.