The paper pointed out the impacts from harmful factors has more or less negative affect on the human health and activities. The special subject will consider labor's condition and health's examination of wood processing workers, based on specific working environmental conditions involved of indoor temperature alway around 32oC, sometime rised to 35oC. The workers usually contacted with noise that the intensity can reach to allowed standard of 85dBA, especially at some steps such as sawing, shaving, polishing... the noises intesity can reach to 101dBA. The working environment of wood processing places can emited a lot of harmful factors, among them are high content of wood dust and hazardous gases. The rate of illness workers is on high level, the otorhinolaryno diseases occur more than 64 persent, ocular diseases more than 25 persent, respiratory and cardiovascular diseases more than 20 persent.