1. Choose the color according to the purpose of the room: for example, the basement can be used for different purposes such as storage room, gym and recreation room, and choose different colors according to different purposes, such as dark red or dark gray for storage room, light blue or light yellow for gym and brown or orange for recreation room.

2. Choose colors according to the atmosphere: the basement is usually dark and humid. In order to create a pleasant and comfortable atmosphere, you can choose bright colors, such as bright red, yellow and blue.

3. Regional color separation: color separation is carried out according to the different areas where the wall is located. For example, you can choose light colors to paint in areas that are prone to shadows, such as doorways and corners, to improve the overall brightness.

Generally speaking, the selection of the color of the basement exterior wall coating is determined by considering many factors, including use, atmosphere, area and so on. Finally, choose a color that can make people feel comfortable and pleasant to decorate the basement wall.