Plywood has a long developing history and takes a important position in woo-based panels because it has many advantages, such as high specific strength, easiness to produce, maintaining natural pattern and properties of wood. Plywood is utilized to decorate, make furniture, pack and so on. So it has a close relationship with people's lives. Properties of environmental protection and flame retardation of plywood affect our lives and safeties directly. Based on practice, this paper researched environmental-f...