在馬王堆出土帛書之中，與〈老子〉乙本寫在同一塊帛布上的，還有四篇重要的道家佚籍，其中第二篇的最後一行有個標題語「十A經」。這個標題語，應該如何釋讀，學者意見相當分歧，迄今仍然無法達成共識。彙整曾經引發學者爭論的議題，集中在如下三項 : 其一、〈十A經〉共有幾章?其二、「十A經」的 A 字如何考釋?其三、「十A經」的詞語結構怎麼分析?這些議題，經過筆者重新評估之後，所得結論如下：其一、〈十大經〉總共十五章；其二、「十A經」的 A 字即是「大」字；其三、標題語「十A經」，其實包含兩個不同層次的標題話，前半段是該篇末章的章題，後半段則是全篇的篇題。

Among the silk texts unearthed at Mawangdui, there are four important lost sections by Daoists written on the same piece of silk. The last line of the second section contains a heading "Ten *A Classics" ("*A" represents the graph to be discussed in this article). The interpretation of this heading has aroused hot debate among scholars who still cannot achieve a consensus. The controversy revolves around three main issues: (1) How many chapters are there in the "Ten *A Classics"? (2) How should we interpret the word "*A" in this heading? (3) How do we analyze the syntax of this heading? This paper offers some conclusions obtained by a re-exploration of these issues: (1) "Ten *A Classics" consists of fifteen chapters; (2) "*A" in this heading is the character Da大; and (3) The heading "Ten *A Classics" is made up of two headings at different levels-- the first half is the heading of the last chapter, while the second half is the heading of the whole section.