本文主要探討了朝鮮後期李宇炯≪經史百家音訓字譜≫的收字情況。收字來源方面，我們得知≪字譜≫主要收字來源於歷代字書、韻書和經史百家。然後，不見於經史百家的雖然在≪韻會≫、≪字彙≫沒有記載，只要在≪御定全韻≫的話都收錄。幷且見於子史的再添加若干字。新收字方面，我們首先和≪字譜≫在收字方面所受影響的≪御定全韻≫進行比較，然後得出≪御定全韻≫未收，但≪字譜≫收了的976個新收字。經過每一條字都和≪說文≫、≪玉篇≫、≪韻會≫、≪字彙≫比較結果，這些新收字與≪字彙≫大致相合，其次是≪玉篇≫等。在字頭選取方面，其字形如≪御定全韻≫有一定的從古現象。≪字譜≫字頭中也有些重出字，爲的是在不同的部類裡面，更充分的解釋該詞的相關義項。

This paper studied the situation of Characters in Jingshi Baijia Yinxun Zipu in the late Joseon Dynasty. In terms of sources of characters, the main characters of Zipu is from the dictionary, rhythmic dictionary, Jingshibaijia, Yudingquanyun and Zishi. And there are many new characters from Zi Hui and Yu Pian, Shuo Wen. Some of head character in dictionary listings are ancient style as Yudingquanyun. And reappear characters are to emphasize the meaning.