Wooden railing is primarily made from preservative-treated wood, which is a protective measure rather than a modification of the wood, thus retaining the wood's inherent physical properties. The original uses of the wood are maintained in preservative-treated wood, and its applications are expanded due to the chemical properties of the preservative wood.

Today, anti-corrosion wood is widely used in the maintenance and renovation of ancient Chinese architecture, as well as in municipal engineering, parks, and residential communities for anti-corrosion wood fences, tree pit railings, wooden walls, boardwalks, leisure walkways, seats, flower beds, railings, trash bins, waiting sheds, and landscape bridges, among other outdoor woodworking applications. It can also be used in indoor decorative pieces.

Due to the varying compositions of different preservatives, it is necessary to differentiate the use of wood treated with different preservatives for various locations.

Treated wood retains the natural, environmentally friendly visual, tactile, and auditory properties of wood, while also enhancing its antiseptic and certain flame-retardant features. It is widely used in industries, agriculture (supporting wood for crops), and construction, and as people's demands for living environments improve, it has gradually expanded to applications in wooden villa houses, floor decks, pergolas, balconies, wooden bridges, walkways, garden furniture, flower stands and pots, and other various outdoor wood products. It satisfies people's aesthetic pursuit of nature, simplicity, and unity. Developed countries in Europe and America began to widely use it in the 1950s of the last century.