Water photovoltaic power station projects are the optimal choices for the development of photovoltaic industry in south China in the future. However

there are few researches on the floating water photovoltaic power station projects

and risk assessment is a crucial part of the feasibility study of projects. Therefore

to make up for the current research gap

this paper established a set of index system including technical risk

economic risk

social risk

and environmental risk through identifying the investment risk factors that affect the floating water photovoltaic power station projects. Considering the uncertainty of the evaluation linguistic information and the fuzziness of the decision-making environment

this paper adopted the hesitant fuzzy linguistic term sets（HFLTS） to collect information

and utilized the best and worst method（BWM） to determine the index weights. Finally

through the fuzzy comprehensive evaluation

it is concluded that the overall investment risk of China’s floating water photovoltaic power station is at a medium low level.