A ribbon coding machine is a kind of coding machine, using hot printing tape instead of ink printing, adopting special movable type loading and unloading word changing structure. It can be in any flexible packaging material coding. The printing is clear and not easy to erase; Hygienic clean, no ink pollution concerns. It is a kind of economic health code. Ribbon coding machine is widely used in the packaging industry. It is necessary to understand its common failures and repair methods.