Method and device for achieving automatic classification of calling reasons

The invention discloses a method and device for achieving automatic classification of calling reasons. The method comprises the steps of obtaining speech flow of clients and a telephone operator, carrying out speech recognition on the speech flow of the clients and the telephone operator to obtain conversation texts, extracting corresponding semantic tag information of the conversation texts, carrying out search in a calling reason index database with the semantic tag information as index to obtain multiple estimated results most proximate to the conversation texts, ranking the estimated results on the basis of a classification model, and confirming calling reason results according to the ranking result. By the adoption of the method and device, memory load and retrieval load of the telephone operator can be relieved, and the accuracy and comprehensiveness of recording of the calling reasons can be improved.