1. Log in to official website of the Trademark Office of the State Administration for Industry and Commerce, and click "Trademark Inquiry" to enter (registration is not required). 2. After entering the system, users can see the main functions: trademark approximate query, trademark comprehensive information query, trademark status information query, error information feedback and operation guide. 3. Trademark approximate query refers to the so-called "prior query" of trademarks, which is the most commonly used trademark query method. Generally, the registration risk can be determined by trademark approximate query. There are six query methods: Chinese character query, pinyin query, English query, digital query, graphic query and prefix query. 4. After the user enters the system, he can click "trademark approximate query" to enter the approximate query interface. Enter the conditions for approximate query of trademarks.