The determine of the pontoon-wharf’s mooring force, which has a direct decisive effect to pontoonwharf’s stability and safety. And there are many influence factors on the pontoon-wharf’s, so, combine with a pontoon-wharf example, apply MIDAS finite element analysis software to analyze and calculate the main influence factors of the pontoon-wharf’s mooring force, and get the main influence factors that affects pontoon-wharf’s mooring force including water level, current, wind load, ship factors and so on. Lastly, sum up the regulations of affecting pontoon-wharf’s mooring force. Through the study on pontoon-wharf’s mooring force influence factors, provide the basis for the design and application, which has certain guiding significance to stability and security of engineering design.