We gather, under the expression of regulation, both Parliament Acts and general texts emanating from executive Authorities. The analysis must be made according to the source of noise. So we have successively examined noisy equipment, industrial, commercial and agricultural activities producing noise, noisy material, carriage, leisure activities, building and neighbourhood noises, and after all the protection of working people. We have also studied the organization of the fight against noise, since it depends on law. Finally, this regulation is already very rich, including both texts directly concerning the fight against noise and other texts belonging to wider regulations (protection of environment or protection of working people). On the whole it seems to be well adapted to its objective, the prevention, even if it may be completed. The main thing is a better application to matters concerning everyday life and striking opinion, such as neighbourhood and traffic noises. It will be surely evolutive, first by connection with related and wider regulations, and above all according to the progress of our scientific and technical knowledge. Thus it will be constantly adapted, if exactly applied, to the needs of prevention.