《詩經》是我國最早的漢語文獻之一，具有重要的語言文字學價值。全面整理研究《詩經》文字，總結探討其規律，也是漢字學研究的重要課題。本文通過建立《詩經》字料庫，運用字料庫的方法，統計《詩經》字量、字頻，整理《詩經字頻表》。通過字頻統計結果，分析《詩經》用字情況。同時對字料庫中的同詞異形現象進行研究，梳理它們的關係類型，探求它們產生的原因。最後，本文還對書寫形式固定的機制進行了考察。本文主要分爲六個部份：第一部份，緒論。簡要說明本文的選題依據及目標、研究對象、理論依據及研究方法，並以開成石經爲例說明字料庫建設的步驟和分層統計字頻的操作原則。第二部份，《詩經》文字研究綜述。本章從《詩經》文字量化研究和《詩經》用字差異研究兩個方面對前人的研究進行綜述。第三部份，基於字料庫的開成石經《詩經》字頻統計與用字研究。本章首先從以開成石經爲對象的《詩經字頻表》中提取出一系列基本數據：總字次、字種、字式、字樣等。並對開成石經《詩經》異體現象進行研究，發現異體字主要分佈在次高頻字區。接著從平均筆劃數、覆蓋率、記錄職能的多少、記錄意義的虛實、記錄語言單位等方面討論每個字區具體情況。第四部份，基於字料庫的《詩經》同詞異形現象量化描寫。本章主要從字料庫中提取同詞的書寫形式，並將它們依據是否屬於同一個字種而分爲兩類。同一字種的又分爲異體關係和正訛關係，不同字種分爲分化關係和通假關係，分別對它們進行量化描寫。第五部份，詞形多樣化產生的原因及固定的機制。本章分別論述同一字種、不同字種同詞異形現象產生的原因。最後對詞形固定機制進行探討：區別律、表達律、簡易律、規範意識對書寫形式的固定起作用。第六部份，結語。總結全文，提出研究的新起點。

"The Book of Songs" is one of the earliest Chinese literature with an important philological value. To make a comprehensive study of the words in "The Book of Songs" and to summarize the underlying rules, is also an important subject of Chinese graphological research.In this dissertation，a database of the Chinese characters in “The book of songs" was is established，so as to ascertain the amount of characters and the frequency of each character，and make a character frequency table. Based on this, the dissertation is intended to sum up the rules for the use of words, find out the relationship between characters and words and match characters with words through a study of different writing forms of the same word. Meanwhile, the paper is to study variants of “The Books of Songs”, clarify the changes of the text and identify the exact period of time each variant belongs to if possible. It will also explore the factors leading to the birth of each variant and find out the linguistic rules in it.The dissertation will be divided into six parts: Part I is the introduction, which gives an explanation of the reasons for choosing this subject, the objective and theoretical basis of this subject and the methodology used in this dissertation. It illustrates the steps for establishing a character database and other related questions by taking the inscriptions of “The Books of Songs” on The Tang Dynasty stone as the example.Part II is mainly about the previous linguistic researches on “The Books of Songs”. It includes quantitative research and the previous linguistic researches on “The Books of Songs”Part III makes a study of the character frequency and the use of word. It will make clear the tiers for classifying characters and conduct the statistical research accordingly so as to make a table of the character frequency and get the basic data about the use of words in the book. We found the variant exists in the second frequency zone. This part aslo discuss the specific situation of esch zone.Part IV studies the phenomenon of one character having different writing forms. It make a quantitative description. The materials come from the character database. The section devoted to the variants of the same character focuses on the relationship among variant. This part divided the variants of the same character into two categories. Their classification standard is whether the variants of the same character belong to a same word. Part V discusses this phenomenon in “The Books of Songs” and the reasons behind it and explores the mechanism governing different writing forms of a character from the perspective of the rules of differentiation, expression.Part VI is the conclusion, in which the whole dissertation is summarized and new areas for research are put forward.