中文摘要：

河南97个方言点儿化韵的演变情况表明韵尾具有舌尖-[＋前]特征的韵母儿化后没有方言差异，韵尾具有舌尖-[-前】特征的韵母儿化后有方言差异。文章逐组讨论了后一类儿化韵的语音变异与可能的结构性因素的影响，包括基本韵母对变韵系统的制约、变韵系统自身的自组织以及变韵系统之间的相互作用等。

英文摘要：

This article collects er suffixation systems of 97 dialects spoken in Central China Henan（河南） Province, and it is observed that the rimes with the feature Coronal-[＋anterior] present no cross-dialect variations, while the rimes with Coronal- [-anterior] present the opposite. Given the fact that more than one changed-rime systems which are derived fxom the basic-rime system co-occur in spacious region in Henan（河南） province, it is mainly discussed the role of structural factors in sound change, including the basic-rime system＇s constraints on the changed-rime systems, the interactions among the changed-rime systems, and the self-organizing of the changed-rime systems. Key words：