An advertisement providing method using a messenger for improving advertisement efficiency and an application performing the same are provided. The advertisement providing method using a messenger comprises: a step of identifying a chat message displayed on a conversation window of a chat window among conversation contents of a chat participant as the chat window of a messenger is activated; a step of identifying advertisement content corresponding to the chat message displayed on the conversation window of the chat window; a step of displaying the advertisement content adjacent to one side of the chat message in the conversation window of the chat window; and a step of transmitting, to a server, information for charging an advertiser of the displayed advertisement content or information for rewarding a user who has confirmed the displayed advertisement content.;COPYRIGHT KIPO 2017
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