Objective] This study is to explore the changes of neurobehavioral function in workers exposed to noise and formaldehyde.[Methods] 68 workers exposed to noise,55 workers exposed to formaldehyde,96 workers exposed to formaldehyde and noise and 78 controls were examined with neurobehavioral core test battery recommended by WHO.[Results] The results showed that groups exposed to noise or formaldehyde and to both were significantly different as compared with the control group ( P <0.05).The combined effects o...