In developing countries such as China, commercial fishermen’s occupational health risks are rarely studied despite being extremely critical for the sustainable development of the fisheries sector. In this study, we attempt for the first time to categorize and prioritize multiple types of health risks posed by these fishermen. This was accomplished by conducting a structured questionnaire survey between 9 January 2022 and 24 May 2022. We sought the professional opinion of fishermen that were located in the coastal areas of Zhejiang, China, namely Zhoushan (121 responses, 64%), Taizhou (66 responses, 49%), and Wenzhou (94 responses, 53%). This study used two hundred eighty-one questionnaires with a consistency ratio (CR) below 0.1 and completed in every respect. Fuzzy Analytical Hierarchical Process (Fuzzy AHP) and Importance Performance Analysis (IPA) statistics were employed to perform statistical analysis. Results have revealed that commercial fishermen’s health is affected by five main risk factors, namely natural (0.058), biological (0.088), social (0.152), psychological (0.234), and physical (0.468), which are arranged from the least to the most significant risk factors. As for the performance of the main risk factors, the physical risk was ranked first (4.786), followed by social risk (4.571), psychological risk (4.214), biological risk (4.000), and natural risk (3.429). These research findings can serve as guidelines for managers. Moreover, this study discusses ramifications, constraints, and proposals for future research.