】汉语中的似矛盾句包括“又Ａ又Ｂ”（Ａ和Ｂ在语义上是矛盾的）和“又Ａ又不Ａ”两种句式。本文从句法、语义、语用等方面分析了这类句式的特点，并进行一项语言测试验证了分析。我们的分析和测试结果都表明，无论有无语境，似矛盾句的语义理解跟它的两个不同的语义层面有关，但有语境时，其理解会受到很强的限制。 The paradoxical sentences in Chinese include “A and B” (A and B are semantically contradictory) and “A and A” respectively. This article analyzes the characteristics of such sentences from the aspects of syntax, semantics and pragmatics, and carries out a linguistic test to verify the analysis. Our analysis and test results show that, with or without context, the semantic understanding of paradoxical sentences is related to its two different semantic layers, but there is a strong limit to its understanding when context is available.