With the industrialization of wood plastic composite products, application researchers have found the defects of wood plastic composite products, and the users have also put forward higher requirements for them: the outdoor products of garden landscape should be anti-aging and anti bleaching, and improve the service life; Indoor doors, windows, and decorative materials should have good flame retardancy; The load-bearing wood plastic products of the building foundation components need to have high mechanical properties and be reinforced to improve their creep resistance. With the increasing demand for energy conservation, the construction industry has also put forward higher requirements for the energy-saving effect of wood plastic composite products. Therefore, wood plastic composite products are developing towards functionalization and high added value: flame retardant, reinforced, anti-aging, creep resistant, thermal insulation, etc.