The invention relates to a thermal transfer printing product printed by offset printing equipment. The thermal transfer printing product includes a thermal transfer film and patterns and characters printed on the film, and is characterized in that: the ink applied in the patterns and characters contains the following components by weight: 38% of rosin modified octylphenol phenolic resin, 14% of isophthalic acid alkyd resin, 32% of soybean oil, 10% of tung oil, 5% of a high boiling point petroleum solvent and 1% of an organic aluminum gel. By adding the ink involved in the invention into ordinary ink, the purpose of printing thermal transfer films by an ordinary offset printing machine can be realized, and the highest printing speed can reach 10000 films per hour. The printing process ends automatically, the work efficiency is greatly improved, and the labor intensity is reduced.