中文摘要：

本文记述了广西崇左三合巨猿大洞新发现的鼠类化石，共有7属11种，包括了4个绝灭种，占鼠类总数的40％。经系统比较研究显示，三合大洞鼠类主要属种的形态特征显然要比重庆巫山龙骨坡的进步，且较相似于湖北建始龙骨洞的相关鼠类；古地磁的测年结果为距今在120—160万年，其时代应是早更新世中期。三合大洞鼠类除了个别广布型外均为东洋界成员，而且几乎都是树栖和半树栖以及林地生活的种类，与大哺乳动物反映的生态特征基本一致，当时的自然景观为气候温暖炎热，森林茂盛的环境。三合大洞鼠类化石的研究填补了广西巨猿动物群缺少鼠类记载的空白，这对于探讨其生态环境将提供重要的信息。

英文摘要：

This article describes the murid rodents from the newly discovered Gigantopithecus fauna from Sanhe Cave, Chongzuo, Guangxi. There are 7 genera and 11 species, of which 4 （40%） are extinct. Systematic comparisons indicate that the murid species from Sanhe Cave are morphologically more advanced than those from the hominid site at Longgupo Cave, Wushan, but resemble those from the hominid site at Longgudong Cave, Jianshi. Paleomagnetic dating of the fossil-bearing strata in Sanhe Cave gives an age of approximately 1.2--1.6 Ma BP, i.e. the middle Lower Pleistocene. Except for a few widespread types, most murid species from Sanhe Cave belong to the Oriental faunal realm. Furthermore, almost all of them are arboreal or semi-arboreal species preferring tropical to subtropical forest or grassland environments, basically identical with the ecological characteristics reflected by megamammals from Sanhe Cave. Consequently, the local environment at that time may be inferred to have been a lush forest with a warm to hot climate. The murids discovered at Sanhe Cave represent the first record of murids in the Gigantopithecus fauna of Guangxi. This new data will help paleontologists to further interpret its ecological and environmental contexts.