通过对《韩非子》中“此”和“是”字的整理与分析，得出《韩非子》中“此”的用法主要是在句中作代词和连词，作代词时主要指代人、指代物、指代时间、指代地点以及指代陈述并在句中作主语、宾语和定语。“是”的用法主要是代词和连词构成语素，在作代词时指代人、指代物、指代时间、指代地点以及指代陈述并在句中作主语、宾语和定语。而在后世的发展演变中代词“此”逐渐替代了代词“是”。

Through the arrangement and analysis of "Ci"（此） and "Shi"（是） words in Han Feizi, it is concluded that the usage of "Ci" （此）in Han Feizi is mainly used as a demonstrative pronoun and conjunction in sentences, the main usages of "Shi"（是） are pronouns and conjunctions forming morphemes. The Pronoun "Ci" （此）gradually replaced the Pronoun "Shi"（是） in the later development and evolution .