Abstract: Utilizing the small scale(volume:0.027 5 m~3) environment test chamber and advanced GC-MS analysis technology which was developed for six types of particleboard.By the method,a qualitative and quantitative analysis method and system for composite panels products can be estallished.Moreover,some knowledge of VOCs emission pattern and regularity of strawboard can be gained.The results show that species,resin and preservatives have obvious influence on IVOCs(Individual VOCs) and TVOCs(Total VOCs) concentration and the VOCs emission has it’s dynamic emission regularity under defined test conditions(temperature,humidity,loading ration and air change rate).