Was studied the noise level inside the Belen and Regional Teacher Hospitals of Trujillo city, for this purpose, was used a sound level meter Cirrus, Model CR: 811C, measurement range: 20 - 140 dBA, accuracy: + / - 2 dBA to 94 dBA level, frequency weighting: A and C, and response time Fast / Slow. The highest noise levels were at Belen Hospital: in the morning shift 90.1dBA in the emergency service, on the afternoon shift at 85 dBA surgery services A and Medicine B and the 86 dBA night shift at the front door; the highest levels of noise in the Regional Hospital were: in the morning shift 79 dBA at the front door, in the afternoon shift at 79 dBA and UCIN services at 75 dBA in night shift emergency service; the results obtained it is concluded that the noise levels in Belen and Regional Teacher Hospitals of Trujillo city exceeded the maximum permissible limits recommended by WHO, the nois...