No one can deny the importance of grammar in language teaching and learning, especially English. Grammar is the central heart of language, grammar is also the tool to help students’ comprehension of the target language. Therefore, in terms of teaching English grammar, using games is one of the most effective ways. Through games, not only good students but also shy and weak ones are encouraged to join in activities because games help them to get the motivation to learn and sustain their interest and help the teacher to create the contexts in which the language is useful and meaningful. The paper presents the definition of games, the characteristics of games, the types of games in language teaching, the steps of applying games in teaching English grammar, and the requirements of using games in teaching grammar. Through using games in teaching English grammar, students can remember well what they have learned and the teacher can save time in teaching.