The present invention discovers a characteristic correlation of propagation patterns to users between contents, the correlation being usable for information recommendation or marketing analysis. In the information recommendation, for example, a content is recommended at a proper timing of propagation. This content analyzing system comprises: a user terminal (200); and a content analyzing apparatus (100) for receiving a predetermined request from the user terminal (200) and returning the result thereof. The content analyzing apparatus (100) comprises: a propagation pattern extraction means (102); and a correlation calculation means (103). The propagation pattern extraction means (102) extracts a propagation pattern indicating how the content has been propagated to the user, for each content included in history data including use history of a plurality of contents. The correlation calculation means (103) obtains the correlation of the propagation patterns between the contents
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