汉语主语的界定虽无定论,但兼顾句法、语义、语用三平面,以及意义、位置二因素综合界定主语的分析理论可接受度更高;“主语和话题”的关系虽有三种不同观点,但“主语等于话题”论仅适用于典型主语;“主语、话题并存,话题占显要地位”论混淆了结构和语义两个不同平面;“主语话题性质不同”论灵活利用“主语—谓语”和“话题—说明”两套结构框架,句法、语义、语用三个不同平面,根据不同性质和特征,准确区分汉语主语和话题,因此该理论更科学合理。 Although there is no conclusion about the definition of Chinese subject, the analysis theory of syntactic, semantic, pragmatic three planes and the subject of meaning and position two factors are more acceptable. The relationship between subject and topic is three different However, “subject is equal to topic” applies only to typical subject; “subject, topic coexist and topic occupies a prominent position” confuses two different planes of structure and semantics; Flexible use of “subject - predicate ” and “topic - explain ” two sets of structural framework, syntax, semantics, pragmatics three different planes, according to different nature and characteristics, accurate distinction between Chinese subject and topic, so the theory more Scientific and reasonable.