The invention discloses a teaching knowledge base construction method, which comprises the following steps of S1, knowledge base framework construction: constructing a knowledge base module frameworkwhich comprises a vocabulary module, a case production module, a case analysis module and a simulation pronunciation module, S2, vocabulary module construction, wherein the vocabulary module is composed of a basic vocabulary submodule, a mood vocabulary submodule, an emotion vocabulary submodule, a tone vocabulary submodule and a sentence segmentation module. According to the invention, two or more than two sub-modules are extracted from the basic vocabulary sub-module, the mood vocabulary sub-module, the emotion vocabulary sub-module, the tone vocabulary sub-module, the sentence segmentationmodule and the punctuation sub-module to intelligently generate and combine cases, so that continuous cases can be intelligently formed, and the case storage space can be saved; the emotion of a speaker during pronunciation can be simulated, and teaching is performed in combination with the emotion, so that a learner can accurately master the profound language charm of Chinese.