《集韵》和《礼部韵略》都是宋仁宗景祐四年（公元1037年）由丁度等人奉命编写的官方韵书。据李焘《说文解字五音谱叙》记载，宋仁宗景祐四年，即《广韵》颁行后29年，宋祁、郑戬给仁宗上书批评《广韵》多用旧文，“繁省失当，有误科试”。另据王应麟《玉海》记载，贾昌朝也同时上书批评宋真宗景德年间编的《韵略》是“多无训释，疑混声、重叠字，举人误用”。于是仁宗皇帝下令由丁度等人重修这两部韵书。结果于景祐四年当年就完成了《礼部韵略》，两年后于仁宗宝元二年（公元1039年）完成了《集韵》。

《集韵》为《广韵》之改正，仍分206韵。只是韵目用字，部分韵目的次序和韵目下面所注的韵字同用、独用的规定稍有不同。从王仁昫的《刊谬补缺切韵》开始，及至孙愐的《唐韵》，韵字都加入注释，并且引文都有出处，于是韵书便同时具有辞书和字典的功能。《集韵》和《广韵》主要的不同之处还在于《集韵》收字多，并且收的异体字很多。一个字不管是正体、古体、或体、俗体，全部收进，一个字可多到**个写法。《集韵》共收53525字，比《广韵》多收27331字。缺点是对字的来源不加说明，字训以《说文解字》为根据，反切多采自《经典释文》。

The Jiyun (Chi-yun; simplified Chinese:集韵; traditional Chinese:集韻; pinyin:Jíyùn; Wade–Giles:Chi-yün; literally: "Collected Rimes") is a Chinese rime dictionary published in 1037 during the Song Dynasty. The chief editor Ding Du (丁度) and others expanded and revised the Guangyun. It is possible, according to Teng and Biggerstaff (1971:147), that Sima Guang completed the text in 1067. The Jiyun has 53,525 character entries (Teng & Biggerstaff, 1971: 147), approximately twice as many as the Guangyun, and likewise has 206 rime groups.