报道了短玻璃纤维／Ｒ－ＰＶＣ复合材料的傅里叶变换红外光谱和声发射分析。采用差示红外光谱技术分析了未处理和偶联处理的玻璃纤维／Ｒ－ＰＶＣ复合材料的结构差异，探测了材料整个拉伸过程中的声发射，并且对试样断口进行了显微分析。研究结果表明，用声发射技术结合试样断口分析，可以方便、灵敏地区分纤维与基体的界面粘合好坏，傅氏变换差示红外光谱的分析进一步证明了这一点。 The Fourier transform infrared spectroscopy and acoustic emission analysis of short glass fiber / R-PVC composites were reported. Differential scanning infrared spectroscopy (FTIR) was used to analyze the structural differences of untreated and coupled glass fiber / R-PVC composites. The acoustic emission during the whole drawing process was detected and the fracture surface of the sample was analyzed microscopically. The results show that the acoustic emission technique combined with the fracture analysis of samples can be used to distinguish the interface bonding between fiber and matrix conveniently and sensitively. The Fourier transform infrared spectroscopy analysis further proves this.