A DC static power limit value calculation method considering the influence of a new-generation phase modifier includes the following steps: (1) establishing a correlation model between AC and DC systems; (2) calculating emitted limit values of leading phase operation and lagging phase operation of the phase modifier; (3) calculating overlap angle of DC under rated conditions and parameters relatedto the inverter side; (4) solving the potential of an equivalent AC system and the voltage power angle of a DC bus; (5) taking DC current as variable, and solving each relevant electrical quantity; (6) judging whether reactive power provided by the calculated phase modifier is within the allowable reactive power range; taking the DC current as an independent variable to solve the DC power if thereactive power is within the range; otherwise proceeding to Step (7); and (7) replacing the calculated reactive power value emitted by the phase modifier with the reactive power limit value that can be emitted by the phase modifier, and returning to the Step (5). According to the invention, the DC transmission power limit value is more consistent with the actual situation, and an important reference is provided for improving the DC transmission capacity in actual operation.