Abstract: The study makes a systemic analysis on Ithaca Wushu by the ethnography method. Base on the fieldwork in Ithaca, the study holds that the American Wushu cultural pattern reveals the mode of "plurality in a unity" during the understanding of decoding and encoding Wushu in America. The phenomenon of "the different and practical Wushu is praised; the competitive dance Wushu is undesired" shows the acceptance incomprehension by local people. It mirrors the "interculturality" that we have to deal with when we disseminate Wushu to the overseas countries.