Legal analysis: The law does not stipulate that it is not allowed. Tattooing is an individual's freedom. Of course, the national flag can be tattooed on the body, but there can be no insulting behavior, otherwise it will violate the law.

legal basis: article 2 of the national flag law of the people's Republic of China * * * the national flag and its patterns shall not be used as trademarks, designs for which patents have been granted or commercial advertisements, and shall not be used in inappropriate situations such as private funeral activities.