Timber construction in China is gaining more attention and use of metal-plate-connected trusses made from dahurian larch dimensional lumber and imported truss plates is becoming more popular for light frame wood construction.This study evaluated tension test results（ultimate strength and tooth withdrawal） for the truss connections according to GB 50005-2003.The load-displacement curves were modeled using Foschi’s equation.The accuracy and efficiency of the Foschi’s model were examined and a conservative method of determining connection ductility ratio was proposed.The result showed that the ductility ratio varied with the types of connections and with a connection of α=0°,was higher than 2.0 which is a typical value used in a seismic resistant structure.