Abstract-In the era of network information, interactive multimedia application technology develops rapidly, and is widely applied in teaching courseware. Online interactive courseware is simple, clear, vivid, visual, convenient, flexible and fast, which also greatly reforms the teaching methods and has become a way of educational informatization. Online interactive courseware has been applied in the course of textile materials. This paper mainly aims to design and construct the method of testing and evaluating the multimedia courseware of Textile Materials based on the multimedia courseware interaction technology in combination with the patented method and device of PPT file playing. By appropriately applying and analyzing the courseware of Textile Materials based on the interaction technology, the results demonstrate that "flip" in class can be basically realized, to realize individualized learning; students' learning attitude can be changed, and students can form independent learning ability; student-student communications via multiple channels and equal student-teacher interaction can be promoted; comments and reviews can be given on the teaching results, so that the desired teaching objectives can be achieved. These findings indicate that online interactive courseware can improve the teaching effect of textile materials course, and relevant conclusions can provide technical reference for the application of online interactive courseware.