Abstract: In order to reduce Formaldehyde emission of particleboard, a vacuum treatment method has been used. Some factors, such as temperature, negative pressure and time were researched in accordance with the table L9(34). Formaldehyde emission, MOR and IB of boards were tested and their results (treated and untreated) were compared, thus, the effect of vacuum treatment can be evaluated. At the same time, the ideal Vacuum treatment condition was also selected. Results show that Fomalde-hyde emission of particleboard can be reduced through the vacuum treatment. There is no negative influence on MOR and IB of boards. Therefore in this paper authors put forward a plan how to use this vacuum treatment method in industral processing.