Objective To study the fusion application of ink implication and poster design. Methods Checking the related data， it listed the content contained in ink implication， classified the and inspiration of ink implication in the poster design，discussed the fusion application of ink implication in the poster design by examples. Conclusion The fusion implication in the poster design should pay attention to the fusion of color， the fusion of form and composition， refer to the use of traditional ink painting， make improvement and innovation to let the ink implication and poster design perfect fusion， help people find the sense of belongings.