Abstract: The temperature at which the electric propulsion slip ring operates has a critical impact on the safe and reliable operation of the ship. In order to control the overall operating temperature of the electric propulsion slip ring, this study establishes the overall model of the electric propulsion slip ring through finite element simulation analysis, designs a four-factor, four-level orthogonal test, and derives the sensitivity of the steady-state temperature influence factor: initial temperature>current>wind speed>speed; the optimal combination of parameters: initial temperature 35 ℃, speed 2 r/min, wind speed 0.2 m/s, current 1500 A, and the optimal parameters are substituted for the temperature field simulation. The results show that the largest region of the overall steady-state temperature distribution is at the outer conductor, with a maximum of 68.5 ℃, indicating that the temperature variation is within a reasonable range; the largest area of overall potential distribution is at the outer wire, with a maximum of 0.04 V, indicating a reasonable current path; the overall current density distribution of the largest area at the outer wire, the maximum current density of 200 A/cm², and the distribution trend corresponds to the trend of potential distribution, indicating that the current direction is reasonable and can meet the requirements of complex environments.