Tubular particleboard panel which is made through extrusion method,has been increasingly visible in the market due to excellent strength-weight ratio and raw material savings.The objective of this study was to optimize the manufacturing process for producing tubular particleboard with E1 grade performance.The processing factors selected in this study included resin content,the amount of formaldehyde scavenger,extruding temperature,and extruding speed.The results showed that the optimal manufacturing parameters for producing E1 grade particleboard were 5% resin content,2% addition of formaldehyde scavenger,160 ℃ extruding temperature,and 0.35 m/min extruding speed.The formaldehyde emission of the particleboard was 8 mg/100g.