以高效液相色谱（ Ｈ Ｐ Ｌ Ｃ）、氨基柱／庚烷色谱体系，对 ４９ 个芳烃纯样的色谱保留指数（ Ｉ）和芳环数（ Ａ Ｒ Ｎ）的关系进行了研究。所获结果表明， Ａ Ｒ Ｎ 和 ｌｏｇ Ｉ值间遵循着严格的划分规律。其中，一环芳烃的 ｌｏｇ Ｉ为 ０．６７２～１．０８９，二环为 １．６５２～２．５８６，三环为 ２．６２９～３．２４１，四环为 ３．４４７～４．１６０，五环为 ４．４８２～５．０００。在研究模型化合物的基础上，建立了芳烃环分布（ Ａ Ｒ Ｄ）的测定方法。运用该法对煤系重质油中的 Ａ Ｒ Ｄ 进行了系统考察 The relationship between the chromatographic retention index (I) and aromatic ring number (A R N) of 49 aromatics samples was studied by high performance liquid chromatography (HPLC) and amino column / heptane chromatography. The results obtained show that there is a strict rule of division between A R N and log I. Among them, the logarithm of aromatics is 0.672 ~ 1.089, the second ring is 1.652 ~ 2.586, the third ring is 2.629 ~ 3.241, the fourth ring is 3.447 ~ 4.160, Ring for 4.482 ~ 5.000. Based on the study of model compounds, the determination of aromatic hydrocarbon ring distribution (A R D) was established. The method was used to systematically investigate A R D of coal-based heavy oil