GB/T 3222.1-2022 belongs to the field of acoustics and is aimed at the content of environment noise. It specifies the basic parameters of environment noise, such as equivalent sound level, cumulative percentage sound level, etc., and standardizes the evaluation method. It is suitable for all kinds of environment noise scenarios, covering urban blocks, industrial areas, natural scenic spots, etc. The standard specifies the measurement environment and instrument accuracy requirements, elaborates data collection and processing procedures in detail, provides basic specifications for accurate description, measurement and evaluation of environment noise, and helps environment protection departments monitor environment noise and maintain a good acoustic environment.