1. The design of public welfare posters has graphic language.

Graphic language is the main way to convey information. As a category of poster design, public welfare posters also abide by the principles of poster design, so they have higher requirements for the communication of graphics and creativity, and cannot rely too much on words to convey public welfare information.

2. The design of public welfare posters is conceptual.

Public welfare posters appeal to ideas, and with the help of the spread of some ideas, they urge the public to enlighten, introspect and pay attention to a social problem, take social behaviors that conform to public morality as the criterion, standardize behaviors and practice them, form a good social fashion, or support a social cause. It spreads the idea of spiritual form, not the commodity of material form.

3. The design of public welfare posters is extensive

A wide audience is also a major feature of public welfare posters. Generally speaking, public service posters are aimed at the vast majority of citizens, not a few specific audiences. The responsibility of public service posters determines that the more people see and accept the contents of the posters, the better the effect, regardless of age, gender or even national boundaries and languages. Therefore, the design of public welfare posters should consider the effective dissemination of poster information.

4. The design of public welfare posters has altruistic consciousness.

Public welfare posters show altruism. It is related to the selfless dedication of helping others, is the embodiment of human virtues such as compassion, love and responsibility, and is a sign that social ethics is moving towards harmony and personal wisdom is maturing. The society should encourage and support those individuals or groups who voluntarily fund public welfare posters.