Flexographic printing is the most widely used printing method in pharmaceutical packaging. But now, heat transfer printing is gradually occupying the flexographic printing market with a rapid offensive. As more and more companies want to become global sellers, in order to meet the requirements of the European market, the product batch number and effective date must be printed on the product package, so the number of language types and common symbols printed on the package also increases. For flexographic printing, to print different information, you need to change the printing plate every time you print, which is very uneconomical. In order to reduce costs, some pharmaceutical enterprises began to use heat transfer printing. Heat transfer printing has the advantages of designable programming, the printing method is not constrained by the printing plate, and can directly call out variable information from the database. Therefore, once used, it quickly replaces flexographic printing.