The frequent occurrence of echo questions in people’s daily conversation has not arouse enough interest in linguists yet; meanwhile, different scholars hold different views when it comes to such questions as how far the boundary of echo questions should extend, how they should be classified, etc. The following paper gives the echo question a new definition and classification. It hopes to provide a more persuasive reference of future researchers. The frequent occurrence of echo questions in people’s daily conversation has not arouse enough interest in linguists yet; meanwhile, different scholars hold different opinions when it comes to such questions as how far the boundary of echo questions should extend, how they should be classified, etc The following paper gives the echo question a new definition and classification. It hopes to provide a more persuasive reference of future researchers.