随着对汉字溯源法的不断研究与推广，目前在普通学校以及对外汉语教学中，字源识字教学已取得了不错的效果。字源识字教学具有直观性、形象性以及有趣性的特点，其教学形式在很大程度上符合智障生的学习特性。然而，对于这方面的研究却十分有限。本文主要从字源识字教学的研究现状、中度智障生字源识字教学的理论依据以及字源识字教学模型及识字过程三方面出发，具体阐述字源识字教学法在培智学校识字教学中的有效运用，为更好地改进中度智障生的识字教学提供一种参考方法。

With the persistent research and popularization of the method of original characters, the original characters teaching has achieved valid effect in regular schools and in teaching Chinese as a foreign language. The education of original characters teaching features in intuition, iconicity and fun, and its teaching form, to a large extent, accords with the learning identity of medium intellectual disability .However, the research in this area is very limited. This paper mainly starts from the following three aspects: the research on current situation of the education of original characters teaching, the theoretical basis on Etymological literacy for the medium intellectual disability, its teaching model and the process of literacy. The paper as well specifically elaborated the effective use of teaching method of original characters in process of literacy in the special school for mental retardation, providing a kind of reference method for better improvement in the medium intellectual disability’s literacy.