Objective To understand and evaluate the overall level of noise exposure in industrial enterprises in Jiangsu Province and to provide a scientific basis for improving occupational health supervision.

Methods The noise monitoring was conducted in industrial enterprises in Jiangsu Province from 2023 to 2024, according to the national monitoring program. Statistical analyses were performed based on different enterprise scales, industry types, and economic ownership types.

Results In 2023 and 2024, a total of 3 216 and 3 623 enterprises with noise hazards were monitored in Jiangsu Province, along with 8 850 and 11 887 monitoring worksites and 4 650 and 6 180 individual noise monitoring participants, respectively. The median noise level at monitoring worksites was 82.4 dB(A) in both 2023 and 2024, with levels exceeding 85 dB(A) in the coal mining and washing industry, the nonferrous metal ore mining and dressing industry, and the railway, ship, aerospace and other transportation equipment manufacturing. The overall non-compliance rates of personal noise exposure levels were 24.7% and 25.2% in 2023 and 2024, respectively. Significant differences of noise levels at monitoring worksites, individual noise levels, and non-compliance rates were observed among enterprises of different sizes and economic types (P < 0.01). By industry, the highest levels were found in the nonferrous metal mining and dressing industry and in the manufacturing industries of the railway, ship, aerospace and other transport equipment manufacturing. By enterprise scale, the higher levels were found in the large-, small-, and medium-sized enterprises, while by economic type, the higher levels were found in the shareholding enterprises and private enterprises.

Conclusions The overall risk of occupational noise exposure in industrial enterprises in Jiangsu Province was relatively high. In the future, regulatory efforts should focus on the manufacturing industries of railway, ship, aerospace and other transportation equipment manufacturing, the metal products industry, and the coal and nonferrous metal mining and dressing industries. Meanwhile, large-, small-, and medium-sized enterprises and non-state-owned enterprises should be included as key targets of occupational health supervision.