Referring to the influence of foreign languages on Chinese grammar，the academic circles often use the concept of “Europeanization”，mainly investigating the language situation after the May 4th Movement. From the perspective of modern Chinese-Japanese language contact，this paper advances the investigation time to the turn of the 19th and 20th centuries，and takes the language examples in modern newspapers and Japanese-Chinese texts in the late Qing Dynasty as the research corpus to empirically investigate the Japanese factors in the formation of the preposition “Dui Yu” in modern Chinese. The research results show that the prepositional usage of “Dui Yu” was formed at the turn of the 19th and 20th centuries in response to the need to translate the Japanese compound auxiliary 「二対シテ」. The existing research results of Europeanization of Chinese are revised or supplemented from the perspective of Sino-Japanese language contact. This study is expected to provide some reference for the study of Japanese factors in the process of Europeanization of modern Chinese，and provide new ideas for the in-depth study of language contact and language evolution.