The invention discloses an algorithm for the maximum jump height of deicing of a single-span iced power transmission line. According to the patent application, a single-span power transmission line deicing theory analysis simplified model is established, the deicing load of the power transmission line is regarded as a sudden dynamic load, and based on the cable structure theory and the energy method, the maximum jump height calculation simplified method of the single-span ice-coated power transmission line is provided for design and ice-resistant reinforcement reference. The method comprises the following steps: S1, analyzing the deicing state of an iced power transmission line; s2, establishing a dynamic tension and maximum jump height relation model; and S3, solving based on an energy principle.