Dyed buns will cause great harm to the body to eat for a long time, because the dyes are chemical products, if the adverse consequences, complaints and food inspection departments to confirm that it is caused by this, the evidence is conclusive, will be held accountable for the producer's responsibility. However, it is not possible to provide treatment free of charge. If it is confirmed that the producer is responsible, then the treatment cost, etc. can be recovered from the person responsible through judicial channels. The key is the collection and confirmation of evidence.