Overlap is an effective tool to establish element relationships and structural relationships in space, which makes visual perception more rich and has tension. As a form element, geometric lines are presented through different combinations and are endowed with meaning. They break the inherent typography, and create a new look for independent individuals with multiple meanings, creating complex and highly changing visual expression. Overlap is an effective tool to establish element relationships and structural relationship ions in space, which enriches and tension visual perception. As a morphological element, geometric lines are presented through different combinations and given meaning. Break the inherent typesetting, take the independent individuals with multiple meanings into a new look, and create a complex and highly changeable visual performance.