background and aims: Hospital acoustics, noisy equipment and people have adversely impacts on patient’s physical and mental health. This paper aims to identify the major sources of noise and noise control techniques in hospitals of Behbahan

Methods: Noise measurement was done according to ISO9612 at designated stations. Equivalent sound pressure levels were measured at 243 measuring stations in 30 minute intervals.  The validated questionnaire was completed for the evaluation of major sources noise among 158 staffs. The Data with SPSS and EXCEL were analyzed. Finally were provided practical suggestions for noise control

Results: The results showed that the maximum equivalent sound levels were 65.8 dB (A), 61.65 dB (A), and 71.1 dB (A) at the Shahid zade, Faride behbahani and Tamin Ejtemaee hospitals respectively. In this paper we shall consider the main source of noise pollution in hospitals were staff and clients, sound of doors, and air conditioning, medical equipment and furniture and beds

Conclusion: This work try to put forward some possible solutions including: Indoor planning, selection of suitable materials, noise control both inside and outside buildings.