When students hand in folklore fieldwork, we find some counterfeit assignments occasionally. Though it is not a rare thesis about cheat on homework in pedagogy and sociology, to folklore collection and recording is in particular. We can not mention it in the same breath. This article is based on the forged fieldwork as author's findings, furthermore, analyze the mentalities and situations with counterfeiting, and then start with to prevent this problem occurring. By shareing with experiences of interview, situation preview, and trace of collections and recordings etc, we attempt to formulate a conception of folklore fieldwork for studends, and lead they to complete the homework without counterfeiting.