Abstract: The influence on brain of subjects from industrial noise is analyzed to provide objective physiological basis for the hearing protection planning， annoyance ease and ergonomic design in the industrial enterprises. EEG signals are recorded using 32-electrode-device from 10 college students under the condition of industrial noise and quiet. The signal data was preprocessed by SCAN software， including removing eye electricity， wake， filtering， segmented merger etc. The ERP for 500ms were analyzed and the N1 (N100) and P2 (P200) amplitude value of brain topographic map were mapped. The analysis results of ERP shows that amplitude of N1 decreased significantly while the amplitude of P2 raised distinctly on the contrary. High SPL industrial noise can lead to attention distraction， annoyance， emotional tension， and interference of cognitive ability.

Key words: industry noise, EEG, ERP, N100, P200, cognition, man-machine engineering, brain topographic map