《龙龛手镜》又名《龙龛手鉴》,是辽代僧人行均为了研读佛而编纂的一部字书。①行均,俗姓于,字广济,幽州人。此书完成的具体时间我们已无从可知,但是从序言中我们可以推断出此书完成的大体时间范围。卷首序言中注明“统和十五年丁酉七月一日癸亥序”。②统和十五年即宋真宗至道 “Dragon niche mirror” also known as “Dragon Kam Shou Kam”, is the Liao Dynasty monks are to study the Buddha compiled a book. ① line average, surname surname, word Guangji, Youzhou people. We have no way of knowing the exact time the book was completed, but from the preface we can deduce the approximate time frame for this book to be completed. Preface quoted in the foreword “unified and ten years of Ding Yi on July 1 Gui Hai sequence.” ② system and fifteen years that Song Zhenzong to the road