A lack of confidence in interacting with people can be a limitation to success. Second language learners may confront many communication problems when their interlanguage is inadequate. Learners need strategies to engage their target language when they do not convey linguistic information with their interlocutors. For a second language learners, this competence requires communicative competence, which involves grammatical, sociolinguistic, discourse, and strategic competence. Communication strategies have been recognized in the field of second language acquisition (SLA) to assist learners in overcoming for their target language deficiency. This research attempts to analyze the communication strategy used reported by the teenager participants during speech performance based on Nakatani (2006) theory, observe the individual strategy developing Nakatani’s theory by Zhou (2014). Also, identifying the speaking challenges and problems they encountered in academic settings or communication. The number of subject research is ten teenager participants of English Massive Program in Kediri who performed at speech competition held by the program. The research setting of this study was English Massive Program in Kediri which is located in Dinas Pendidikan Kota kediri. In this study, a descriptive qualitative and a case study is presented as a research methodology. In analyzing the communication strategy, the researcher used the OCSI questionnaires, the observation of individual strategies and interview. The researcher found that participants use the social affective strategy category the most, while the message abandonment strategy category as the least frequently used. In line with the findings of questionnaire, the observation results of the individual strategy of OCSI used by participants in performing the speech performance and the interview show that participants also tend to use social affective strategy and negotiation of meaning strategy over translation strategies. This is also demonstrated in the findings of their data interview. Enjoying the conversation and trying to make the listener understand what the speakers are saying are two of the most important issues for the study's participants. The future researchers are suggested to provide language learners' attention on achievement strategies; performance goals may also contribute to learners' speaking performance. It's worth looking at how students use this type of strategy effectively in the communication process. The results can be used for the furthervi researchers which focus on improvement speaking skill through communication strategies in any tasks will be used.