Graphic design refers to the use of various graphic elements to express certain information and meaning, so as to achieve the comprehensive purpose of aesthetics, function and communication effect. In graphic design, there are some basic principles to follow to ensure the effect and quality of design. The following are some basic principles of graphic design:

1. Symmetry: Symmetry is one of the most commonly used principles in graphic design. It refers to the symmetrical arrangement of graphic elements along an axis or central point, which makes the whole design look more balanced and harmonious. Symmetry can be divided into horizontal symmetry, vertical symmetry and central symmetry.

2. Balance: Balance means that in graphic design, the size, shape, color and position of various graphic elements should be kept in relative balance, so as to avoid visual imbalance caused by an element being too prominent. Balance can be divided into symmetric balance and asymmetric balance.

3. Simplicity: Simplicity means that in graphic design, we should avoid too complicated and complicated design elements, keep a simple, clear and easy-to-understand design style, and make the information more clear and accurate.

4. Repeatability: Repeatability refers to the repeated use of an element in graphic design to achieve the unity and consistency of the whole design. Repeatability can be the same shape, color, texture or font, etc.

5. Contrast: Contrast refers to the use of different colors, sizes, shapes and other elements in graphic design, which makes the whole design more colorful and highlights the theme and key points.

6. sense of hierarchy: sense of hierarchy refers to the use of different sizes, colors, shapes and other elements in graphic design, which makes the whole design show an obvious sense of hierarchy, thus making the information transmission clearer.

7. Color application: Color application refers to the application of different colors and TINT in graphic design to make the whole design more beautiful and attractive. Color application can be adjusted and changed according to different design themes and communication purposes.

In short, the principles of graphic design are the basic laws and guidelines that designers follow when designing, which can help designers create more beautiful, practical and effective design works. In graphic design, symmetry, balance, simplicity, repeatability, contrast, layering and color application are all very important principles, and designers need to choose and use them according to different design requirements and situations.