Based on the background that streaming movies widely promote the ecological reshaping of the film industry, this study explores the relevant factors that affect users' motivation to watch streaming movies under the COVID-19 epidemic. Through user research and literature research, 12 factors affecting users' streaming media movie viewing motivation are summarized in two dimensions. Decision Laboratory Analysis (DEMATEL) is used to study the key decision factors and the correlation between the factors of users' streaming media movie viewing motivation, and the advantages and disadvantages of using streaming media to watch movies under COVID-19 background are summarized, so as to provide suggestions for the optimization of streaming media movie industry.