This research aims to study about using copy words (Thai and English) in the University of Phayao Students grade 1 to grade 4 and to study using copy words (Thai and English) with conversation in dairy life of students of University of Phayao Students in the academic year 2016 for 50 students.The instruments used were a survey questionnaire. Research result found that students using copy words (Thai and English) most with older about 55% and using copy words (Thai and English) least with family about 50%.