A resorcinol-phenol formaldehyde, resin was developed for bonding laminated wooden beamswhich have a large cross-section and used under a sever condition," This kind of resin, can be cured at room temperature. In order to determine its performance, some tests on interal, bond and weatherability were carried out and the properties of the resin were discussed, The results indicated that, the performance of the resin can meet designed.requirements. At present, the beams bonded with the resin have been used in practice