Abstract—In the fast development of technology, robot has played many vital roles in different fields of life. Robot is also used in education as a teaching assistant in arts, science and language course. In Viet Nam, the secondary schools or high schools spend a lot of money on hiring native speakers for teaching English classes. Currently, in most Asian countries where English is taught as a foreign language, therefore many various instructional methods are being used for teaching English at school as well as English Language Centers. As a result of this paper approach to English teaching robots, the use of robots like as foreign language instructors has been referred to as a robotic revolution in Industrial Revolution 4.0. In this study, we will describe applications of several robots have been conducting the English teaching instructors tutoring some extra-class’s programs in Viet Nam. The results shown the potentials of individualized interaction in language education are substantial. These performances give the positively contributions to improve of motivations of children studying English as well as other languages. This paper will show the effective tools for language education of robot. From experiments in reality, using robot being an instructor in English class has proven to enhance the language teaching for children effectively. The children, who learn English with an instructor like as robot have shown better learning results in speaking, as well as more confidence and much motivation in studying.