Abstract: The high speed development of information technology leads the human society into the era of Internet of things,when a new type of logo,two-dimension code appeared.The technology of two-dimension code has been very mature in foreign countries but in China it has just started.Two-dimension code contains a large number of enterprises and personal information.It is widely used in the product promotion and enterprise publicity,so we can find that two-dimension code seems to have the functions of trademark in some degree.But the two-dimension code also has its traits,so considering it as trademark may be confusing.In order to solve this problem,we should consider trademark and trademark law to find a solution to the confusion.