Digital technology is helpful to the interdisciplinary subject learning and practice. In junior high school art "painting road of eternal life" project learning process, "how to better save and show paintings" as the essential problem, "painting the road of eternal life", relying on art, history and information technology learning field, fusion of multidisciplinary methods and means, design data investigation, analysis, experimental exploration, creative practice, materialized achievements and display interdisciplinary series of learning activities, realize high order thinking package low order thinking, guide students in the checking, iteration gradually towards innovation.