Social media has become a technological support and interactive platform for women to construct and showcase themselves and is widely acknowledged that the proliferation of ideal beauty information on social media platforms has led to "appearance anxiety". The protective filtering of body image-related information has become an important intervention strategy for women to actively address the triggering of appearance anxiety caused by ideal beauty information. This study used mix research methods to clarify the mechanisms behind protective filtering behaviors of body image-related information and develop a protective filtering scale suitable for young women. Study 1 focused on exploring the factors influencing protective filtering behaviors and constructed a theoretical model based on the rooting theory based on the clarification of the connotation of protective filtering. Study 2 followed the standardized scale development process and developed a protective filtering behavior measurement scale containing 3 dimensions and 18 items. The results of this study indicate that the protective filtering scale has good reliability and validity and is effective when applied to the population. It can be used to measure protective filtering of body image-related information among young women in China.