The invention discloses a helicopter ship surface wake flow influence simulation method. A helicopter blade element theory is adopted to give out an aerodynamic force model of rotor blades, multiple coordinate systems are established, influences on the aerodynamic force of the rotor blades by a ship surface wake flow field are taken into a calculation model through coordinate transformation, and a helicopter ship surface wake flow field calculating and analyzing model is established. Calculation results show that a ship surface wake flow model established through the simulation algorithm is closer to statistical properties of actual ship surface wake flow in wake flow response amplitude and wake flow influencing area simulation results, and a ship surface wake flow influence calculating model is closer to actual warship landing situations in the whole process that a helicopter lands on the warship. The ship surface wake flow influence calculating model is applied to a navy straight-8J flight simulator and a navy straight-9C flight simulator, and is accepted through trial flight of pilots, and the simulation degree is considered to be vivid. The helicopter ship surface wake flow influence simulation method passes expert review authentication and product approval authentication organized by the navy.