With the development of Economic globalization and Chinese Economy, more and more people begin to study Chinese, and more Chinese people are learning English. When we studying another language, Translation software is a very useful tool, but most of the translation software just can perform literal translation. We usually make mistakes when we translate the words which literal meaning is absolutely different from those words' real meaning. We call those kinds of words "False Friends". This paper will discuss the False Friends in Chinese and English and presents how to use XML for detection of False Friends based on LanguageTool. It can be convenient embedded to software and some common text editor, such as Open Office. It can timely give prompts when people editing or reading. It will be very convenient to study and translate English for language learners.