To reduce production costs of medium density fiberboard（MDF）,melamine was used to improve urea-formaldehyde resin（E1 grade）,and the curing agents were optimized to match with the modified UF resin. Trial Production results showed that MDF made with the modified UF adhesive by single condensation reaction could meet the requirements of standard GB/T 11718-2009. It was calculated that production capacity could be increased by 21 400 m3 resulting in profit of 3.40 million yuan and that the cost of UF adhesive could be reduced by 3.51 million yuan for a continuous press line with production capacity of 180 000 m,3, per year.