The purpose of this study is the analysis and the 「conflict」of 「Negative evaluation」and 「disagreement」that was appeared during conversation by passage of time. The data was collected by the conversation of two of Japanese native speakers and two of Korean learners of Japanese language. The conversation was processed three times and thirty minutes. As the result of the study, the 「negative evaluation」and the 「disagreement」were increased when the investigation is conducted. However, The Korean leaners of Japanese language have the 「negative evaluation」and the 「disagreement」more than Japanese native speakers. Especially, the appearance frequency was high in the 「negative evaluation about the other party」and the 「disagreement about the other party’s opinion」. There was not a lot of 「conflicts」in the <conversation 1>. When the Korean leaners of Japanese language had the utterance that induces the 「conflict」, the Japanese native speaker had the utterance that mitigates the 「conflict」. There was a lot of 「conflicts」in the <conversation 2>. Almost「conflicts」were between Japanese native speaker and Korean leaner of Japanese language. However, it was found that the 「conflict」was for mitigating the conversation tension and livening up the mood. There was a lof of 「conflicts」in <conversation 3>. There was 「conflict」between Japanese native speaker and Korean leaner of Japanese language in <conversation 2>. However, there was 「conflict」 between person with the same opinion and person with the different opinion. The 「negative evaluation」and the 「disagreement」were increased by lapse of time, and the 「conflict」was increased. However, the appeared 「conflict」was not for opposing the other party but for appearing the intimacy to the other party. Henceforward, I want to make the result that contributes the interaction between Korea and Japan by the research with the various direction.