本研究主要目的在探討「國語口手語法」對聽障兒童說話清晰度、語言發展能力、國語文能力、讀話能力的影響，以做為啟聰學校(班) 教師語文教學之參考。以八十三學年度臺北市立啟聰學校國小一年級仁班的八名聽障學生為實驗教學的對象，依研究對象之性別、年齡、智力、聽力損失程度，配對分成實驗組及控制組，實驗組以國語口手語法進行教學活動，控制組則採用口語教學法。並以「畢保德圖畫詞彙測驗」、 「聽覺障礙學生國語文能力測驗」、「注音符號測驗」及「語言障礙評量表」為評量工具，分別蒐集二組之學前、學後及追蹤評量分數。以前測成績為共變量，後測成績為變量，進行共變數分析，結果皆未達統計顯著水準。表示使用國語口手語法進行十六週的教學，並沒有使實驗組在所測量的四項教學效果方面顯著增加。

　　　　　The maul purpose of this study is to investigate the effects of the Mandarin Oral-manual System in teaching speech intelligibility, language development, Chinese language ability and speech-reading ability to children with hearing-impairment. The results can be applied to the language skill teaching in special classes and schools for the deaf. Eight first-grade students with hearing-impairment from one class of Taipei Municipal School for the deaf were selected. The subjects were matched by gender, age, intelligence and degree of hearing loss and were randomly distributed to the control group and experimental group. Mandarin Oral-manual System was adopted bx- experimental group and Oral Method was adopted by control group. The Peabody Picture Vocabulary Test, Chinese Language Ability Test for the Deaf, Chinese Phonetic Symbols Test, and Language Disorder Scale were adopted to collect pre-and-post experiment and follow-up scores. Using the pre-experiment scores as covariance; the post- experiment scores as variance, covariance analysis was conducted. The results indicated no significant differences between two groups. According to the findings of this study, the Mandarin Manual-oral System has no significant effect on the language teaching of experiment group for sixteen months.