First of all, material, structure and process itself billboard must take into account the safety factor, quality must pass. For example, fire resistance, wind resistance and strong structure. In the city, often encountered strong winds if billboards can not do good wind resistance, once the wind will come to collapse, the consequences could be disastrous. If once the fire, billboards can not do a good fire, fire resistance, it will contribute to the spread of the fire. Therefore, advertising must be very good fire resistance, wind resistance and strong structure.

　　其次，从环保的角度看，广告牌在设计的时候不应该做的色彩太鲜艳、太亮，这样容易造成光线污染。

　　Secondly, from the perspective of environmental protection, billboards should not do in the design when the color is too bright, too bright, so easy to cause light pollution.