Abstract: With the rapid development of the technology of electronic network, dictionaries show a tendency for electronization and mulitimodalization. This paper, under the theoretical framework of Kress and van Leeuwen's multimodal discourse analysis, attempts to analyze the construe of interactive meaning in the electronic dictionary Longman Dictionary of Contemporary English the 5th Edition Plus for IOS. The research results show that LDOCEP, compared to traditional paper dictionaries with a single visual modal, integrates wording, images, sounds, colors and other signs to make full use of readers' multimodal senses of vision, hearing and touch, may optimize the multilateral dialog and interaction among participants, learners and dictionary compilers/designers, and help learners develop their multiliteracy.