This article is aiming to explore that from Jan,2020 to Aug, 2020, how the Covid-19 outbreak in China had influenced the domestic and global market of epidemic prevention materials, especially of masks, which had long been treated as a type of decoration or unnecessary items in daily life. We cut to the influencing factors through a series of background research, including price fluctuation, residents' consumption behavior transformation, policy interpretation and international epidemic situation. By means of elaborate analysis, we have come to several conclusions that present macroeconomic situation and give a probable trend with respect to the market of personal epidemic prevention materials. this article is to provide small enterprises producing epidemic prevention materials with actual financial support and reliable market prediction, so that they can act ahead of time in terms of tax reduction and loan interest rate reduction.