Abstract: Pyrolysis behavior and pyrolysis products of the scrap printed circuit boards were investigated using a TG-FTIR analysis system. The fluidized bed reactor was used to pyrolyze the scrap printed circuit boards particles under inert gas conditions, and the liquid products with a high boiling point and the solid products were analyzed using elemental analyzer and FT-IR. It is found that the liquid yield increases with temperature or gas velocity. The main component of liquid products is aromatic compounds with substituted functional group. The solid products mainly consist of carbon and fiberglas.