IntroductionPart Ⅰ: The similarities and differences between Chinese and Englishi dioms1. Two similarities.2. Three differences.Part Ⅱ: Five methods used in idioms translation.1. Literal translation.2. Equivalent translation.3. Free translation.4. Combination of literal and free translation.5. Translation with annotation.Part Ⅲ: Essential opinions on idioms translation.Conclusion