Although online hot words have gained high market attention, it does not rule out that some online hot words are inconsistent with the goods or services bought and sold by merchants. Trademark is mainly used as the main symbol to distinguish similar goods or services. If it is not related to goods or services, it is of little significance to register online hot words as trademarks. For example, with the excavation of the tomb of Haifaint Hou in Nanchang, hot words related to "Haifaint Hou" also appeared on the Internet. Many enterprises and individuals inside and outside Jiangxi Province registered the trademarks of "Hai Faint" and "Hai Faint Hou". Nanchang also took Nanchang Museum as the main body, and submitted 25 kinds of trademark registrations, which marked the beginning of a series of trademark defense battles at Houguo Site at sea in Nanchang. There is also a young man in Nanning: "blue skinny, mushrooms" has become a new hot word on the Internet, and it has been squatted by a company in Shenzhen. Comment: Internet buzzwords are a rapidly popular culture, which is often forgotten or replaced after a few days or months. Although online buzzwords can be used as marketing tools to increase profits for enterprises, there are still some risks in registering trademarks.