This paper discuss the Chinese?Japanese homograph?“宅急便(Express Mail)”, focusing on the reason why it wasn’t accepted by Chinese people so quickly as other Chinese?Japanese homographs were. The Japanese word “便” differs greatly from the words “急便” in their meaning, while their pronunciations often suggest unclean association for Chinese people. “便” is a suffix in Japanese, but a prefix in Chinese. Therefore it does not fit the word formation pattern or speech habit in Chinese. The current research concludes that the term “宅急便(Express Mail)” will not be accepted by Chinese people within a short period of time.