Social media has become a technological support and interactive platform for women to construct and present themselves，and it has been widely recognized that the information profusion about ideal beauty on social media platforms has led to “appearance anxiety”. The protective filtering of body image - related information has developed into an important intervention strategy for women to actively address the triggering of appearance anxiety caused by ideal beauty information. This study applied a mixed research method to clarify the mechanisms behind protective filtering behaviors of body image - related information and developed a protective filtering scale applicable to young women. Study 1 primarily explored the factors influencing protective filtering behaviors and constructed a theoretical model based on the grounded theory and specified the connotation of protective filtering. Study 2 followed the standardized scale development process and developed a protective filtering behavior measurement scale containing three dimensions and 18 items. The results of this study indicated that the protective filtering scale has good reliability and validity and is effective when applied to the population. It can be used to measure the protective filtering behavior of body on image - related information among young women in China.