The purpose of this research is to explore interactive design approaches for MOBA (multiplayer online battle arena) mobile games based on user experience. Interactive design cases of MOBA games are adopted as the basic information. The close connection between the flow theory and the game motivation is combined to study specific needs of MOBA mobile game players. According to the design principle of the mobile terminal and the characteristics of MOBA games, four interactive design approaches, including improvement of the gesture operation efficiency, strengthening of the process experience, emotional arousal, and objective orientation and flexible feedback, are proposed. By providing players with the optimal user experience, this research attempts to come up interactive design approaches which can improve user experience of MOBA mobile games.