1, clear theme, follow suit.

The theme of the poster must be unique and clear. As long as the theme is made clear, the propaganda of moral education can be achieved, which will play a role in persuasion and warning. No theme means no theme. If the theme is too complicated, it means nothing is displayed.

2. Correct values

Public service posters are advertisements that serve the public interest. Seeking social welfare and serving people's vital interests is an advertisement to arouse people's awareness of citizenship, public welfare and public morality, promote social harmony and promote spiritual civilization construction.

3. Meet the needs of the public

People need to be respected. Most people have disobedient personality characteristics, and people's psychological world has a rebellious character more or less. This type of preaching and tough public welfare poster design will undoubtedly be rejected by the public.