Particleboard has been indicated as one possible source of volatile organic compounds (VOCs) at normal indoor. This paper examines the VOCs emissions from the larch particleboards. Temperature, relative humidity and air change rate are significant factors influencing the VOCs emissions from particleboards. With the temperature and humidity various in the ranges from 23°C-40°C and 10%-70%RH the TVOC concentrations increased. Whereas the increasing of air change rate causes the TVOC concentration decreased.