This study investigated the differences in willingness to communicate (WTC) between Americans and Chinese living in China and the United States, and the factors affecting WTC between these two nationalities. A battery of questionnaires was administered to 47 American and 54 Chinese college students in China, and 51 American and 42 Chinese college students in the US. Overall Americans were found to be more willing to communicate with Chinese than were Chinese with Americans. Participants living abroad reported higher levels of WTC than those living in their home country. Among Chinese, WTC was positively related to self-perceived communication competence, language competence, immersion time and motivation being positively correlated and negatively associated with CA. Similar results were obtained from Americans, except that immersion time and language competence were not related to WTC.