1. Compliance: Ensure that the advertising content meets the requirements of local laws, regulations and policies, and avoid illegal content.

2. Advertising forms: Choose advertising forms suitable for subway scenes, such as in-car advertisements and platform advertisements. , and consider the size, location, quantity and other factors of the advertisement.

3. Advertising content: advertising content should be concise and clear, highlight key points, and avoid using too many words and pictures. At the same time, we should consider the needs and interests of the target audience to improve the attractiveness of advertisements.

4. Advertising design: Advertising design should be beautiful and generous, with proper color matching, and try to coordinate with the subway environment. At the same time, we should pay attention to the font, pattern and other elements of the advertisement to ensure that it can be seen clearly under different lighting conditions.

5. Advertising time: Choose appropriate advertising time to avoid affecting passengers' travel experience during peak hours. At the same time, holidays, activities and other factors should be considered, and advertising planning should be done in advance.

6. Budget and expenses: According to the advertising plan, allocate the budget reasonably and control the expenses. We can cooperate with subway operators or advertising companies to strive for more favorable prices.

7. Monitoring and evaluation: After advertising, it is necessary to monitor and evaluate the advertising effect, so as to adjust the advertising strategy in time and improve the advertising effect. Data can be collected through questionnaires, passenger feedback and other ways to understand the actual effect of advertising.