中國璽印的史料價值與藝術價值在於文字，而文人篆刻藝術與文字學的緊密關係也在於以文字入印。既然以文字作為藝術表現的主體，篆文的正確性也就倍受重視。 本文主要探討的是篆刻作品中的用字問題，並將這些篆刻用字的情形分成三大類：一是印內文字，即是取用古璽、漢印中的字形。二是印外文字，字形取材於古文物上的字體，如甲骨、金文、石刻、簡帛等；或是從《說文》、《汗簡》等字書中取用的。三是運用情形，取材情形有本字、或體、同音、假借、古今字、正俗字、偏旁部件共用等各種現象。 從這些篆刻用字分析的情形來看，篆刻用字除了傳承璽印中的用字之外，也有部分取材於字書的字形，其它則是有關文字的運用情形。由此可見，篆刻用字與文字學緊密相關的情形。

The historical data and artistic value of the Chinese seals lie in the meaning of characters. The schola's seal-engraved art and philology has a close relation because the Chinese characters were implemented and engraved into the seals. Since seal-engraved arts regard the Chinese characters as the theme, the exactness of Chinese characters implemented in the seals is much emphasized. The main purpose of the article is to discuss the words in the seal-engraved works, and the article divides the chosen words into three parts. The first part is the words taken from the ancient seals. The second is the words drawn on the antiques, for instance the bone, the inscription on ancient bronze objects, the stone, simple silks, etc., or those taken from the two book, Shuo Wen and Han Jian. The third is words implemented by the different conditions, such as the original words, or words from those with the same characters, with the same sound, or words from which were borrowed, or the formal and informal words, or words of which only share parts, etc.. In above, from the view of the words in the seals, the words do not only be taken from the ancient seals, but also from parts of the books and other philology-related implementation. Therefore, there is a close relation between the words of seals and the philology.