Abstract: The problem is to provide a thermosensitive color-changing dry offset ink, having no problem in an ink transferability and an excellent printing characteristics. As a thermosensitive color-changing dry offset ink is used one composed of thermosensitive, color-changing microcapsules mixed in a vehicle the capsule having two particle size characteristics of (1) particle size distribution: particles of less than 0.5 ?m are contained in not less than 10 volume % and those not larger than 3.0 ?m are contained in not less than 90 volume % and (2) mean particle diameter: 0.2-1.5 ?m.