The flame-retardant treatment of wood and wood-based materials is a type of technology that can convert combustible wood into flame retardant materials. The main method of this kind of transformation is the addition of chemical substances to wood. Flame-retardant wood not only has fire-retardant performance but also retains the original excellent properties of wood. The ideal flame-retardant materials for wood and wood-based materials should have the following characteristics: high potency, lack of toxicity, no environmental effects during use, durability, no heat or light decomposition, no ease of hydrolysis or breaching, good dimensional stability of the wood after fire retardant treatment, no effect on the physical and mechanical properties of the wood, a low cost, a rich source and ease of use.