Legal analysis: Relevant laws stipulate that neither the party flag nor the national flag can be used as trademarks or advertisements; therefore, the party flag and national flag Tiananmen cannot be used on private websites. The Huabiao pattern has no requirements and can be used.

Legal basis: "Several Provisions on the Production and Use of the Flag and Emblem of the Communist Party of China" Article 6 Scope of use of the party flag:

(1) Convene the Party’s grassroots congress , hold an oath-taking ceremony for new party members to join the party;

(2) Hold major celebrations, commemorative activities, and party day activities within the party;

(3) Party committees and their working departments, party The party flag may be flown in the conference rooms of representative organs dispatched by the central and local committees and their work departments, as well as the party's disciplinary inspection organs.