Chesbrough (2003) point out the open innovation and explains open innovation spirit that external ideas can as internet idea. Innovation web-instruction platform (IWIP) is utilizing the external innovation of information and internet technology to web-based instruction and building a new model of information technolog integrating into instruction. This paper build a research model through literature review and utilizes the technology acceptance model (Davis, 1989) to discuss the difference between the teacher?s background and the user intention and the characters of IWIP, the relationship between the user intention and the characters of IWIP and the relationship between the user intention and the user acceptance. This paper collected the data by questionnaires and analyzed by structural equation modeling. The results display that there are obvious differences between the teacher?s background and the user intention and the characters of IWIP, and positive relationships between the characters of IWIP, the user intention and acceptance. Therefore, this study suggests that to enhance the guidance of the characters of IWIP, to promote the user?s positive perspective, to keep on the open innovation process to import variety innovative characters of IWIP and to pay attention on different background user group to make customization projects.