As robot technologies develop, many researchers have tried to use robots to support education. Studies have shown that robots can help students develop problem-solving abilities and learn computer programming, mathematics, and science. However, few studies discuss the use of robots to facilitate the teaching of second languages. We discuss whether language teaching needs robot support, whether robots present an appropriate medium for language instruction, and what challenges must be overcome. In order to explore the possibility of using robots as an instructional tool for teaching a second language, this paper reviews prior studies concerning educational robots and analyzes the characteristics of robots and instructional media. Furthermore, we report on the design and testing of five instruction scenarios for teaching second language. Based on our empirical experience, we provide suggestions for future research directions in the realm of robots for language education.