本文是通过经验模态分解对信号进行分解，判断出小麦的完好和虫蛀的情况。最后将分解的信号用支持向量机进行识别分类，得出识别精度。-This article is by empirical mode decomposition signal decomposition, it judged the situation well and insects of wheat. Finally, the decomposition of SVM signal recognition and classification, recognition accuracy obtained.