The objective of this study were to The effect of exposure to wood dust on pulmonary function among staffs of wood sawn timber factory in Kamphaeng Phet Province. From a sample of 43 people. The workers were divided into carpenter 33 workers and staff members of the 10 people. Collected data were divided into 3 parts: 1) exposure assessment and small dust total dust in the atmosphere work. The series equipment air sampling model with the standard method NIOSH method number 0500 0600 respectively and 2), lung function test method by spirometry. (Spirometry) and 3) collection of personal information and information work using questionnaires. Statistical analysis for frequency, percentage, mean, standard deviation, statistics man Whitney chi-square statistic and statistical correlation.