In order to enhance communication competence, it is necessary to apply various communicative activities and promote interaction to exchange meaning by means of English. In general, communicative activities can enhance communicative competence by increasing the needs for communication and facilitating interaction with appropriate cognitive load for English use. However, the cognitive load caused by the communicative activities may vary depending on the characteristics of individual activities and the English level of learners. From this point of view, this study summarizes the suggestions based on communicative activities, cognitive load, and learner characteristics in English education field. Based on this, practical examples are presented to provide the theoretical basis for further studies. The cognitive load caused by linguistic, functional, and interactive characteristics needed to perform communicative activities can have a significant impact on interaction and English learning results. Even if the same communication activities are performed, interaction and English learning results may vary depending on the characteristics of learners, especially their English level. In order to verify the effect of communicative activities on English learning, further studies are needed to verify the effect of communicative activities and learner characteristics on cognitive load, interaction, and English language results.