First, the marking function of the trademark source. The most essential and basic function of a trademark is to distinguish the same goods or services. Trademark is the most convenient and effective means to identify goods or services. Through trademarks, different sources of the same product can be distinguished, which is conducive to protecting the legitimate rights and interests of consumers.

second, the supervision function of commodity quality. A trademark is not a sign of the quality of a commodity, but its reputation depends on the quality of the commodity. The better the quality of goods, the higher the credibility of trademarks, and the quality of goods is the soul of trademark credibility. With trademarks, producers can pay attention to the credibility of trademarks, thus improving the quality of goods.

third, the guiding function of trademark purchase. With trademarks, it will help to identify brands, choose goods and safeguard the interests of consumers. For consumers, the first thing to choose a trademark is the trademark logo, so goods use trademark embellishment to attract customers, guide and stimulate consumption.

fourth, the advertising function of commodity sales. Trademark is an effective means of advertising. Many brand-name goods are well known to consumers through advertisements. Once consumers are satisfied with their use, they will be promoted to other consumers, which will make the products more popular. In this process, trademarks play the role of silent salesmen, but also play the role of advertising.