Abstract: A method of segmenting topics of content according to an embodiment is configured to preprocess text data configured of content, and divide a plurality of utterances into two topic segmented bodies based on the preprocessed data. The preprocessing may be performed by processing the text data in a continuous form of the plurality of utterances, and calculating a conceptual similarity between utterances based on the processed data. The topic segmented bodies may be divided into two by calculating similarity cohesion for the two topic segmented bodies based on the conceptual similarity and a consistency metric while changing a segmentation point which distinguishes the two topic segmented bodies, and determining the segmentation point based on the similarity cohesion.