The purpose of this study was developing an online peer assessment system of digital photography course for college students. In this study, the researchers reviewed some literatures about peer assessment strategies, and the current situation of digital photography teaching. Moreover, the researchers analyzed the possibility of using the strategy of peer assessment in the digital photography courses of university, and established the system. This system provides multifunction to the learners, such as upload creations, peer review, learning process, and gain feedback from peers, which could help learners enhance the effectiveness of learning digital photography. In other words, the characters of this system have to easy review, anonymity, easy conduct, and quickly evaluate, which support for college students save time of evaluate the photography-related courses creations for peers. However, the proposed assessment system will be verified in the future.