The main body of design criticism is: the appreciator and user of design.

Main features:

1. First of all, design plays a guiding role for readers to read and understand design works;

2. Not only that, design criticism can help the public choose and identify works;

3. In addition, design criticism can regulate the creative activities of designers.

The extension of the basic definition of design criticism;

Design criticism is both an objective activity and a subjective activity. Saying it is an objective activity means that design criticism has an objective standard, and saying it is a subjective activity means that there are many subjective factors in design criticism that are difficult to quantify. The standard is unitary, but there are many factors in design criticism, that is to say, the design standard is influenced by many factors such as history, nationality, region and times. Three principles of design criticism: humanistic consciousness, culture and marketability.

The expansion of design criticism function;

This is a creative perception, imagination, experience, understanding and evaluation activity for the public to meet their own aesthetic needs, which can make people feel spiritual pleasure.

Design appreciation is a kind of activity with extensive mass, and it is the main content of design appreciation to make a multi-angle, multi-sided and multi-level inspection of this appreciation. This paper mainly studies the conditions and psychological activities of design appreciation.