The present application relates to a method and apparatus for automatically generating similar questions; the method includes obtaining an initial question; generating an extended question according to the initial question; judging whether the extended question is a similar question, and marking the similar question according to the judgment result. The invention provides a method for automatically generating similar questions by using a computer, which saves human resources consumed by labeling similar questions manually and can reduce the cost of robot customer service. And computer generation is more efficient, takes less time, and is conducive to temporary FAQ increases in the case of more flexible use.