The invention discloses a method for calculating a short-circuit current contribution value of new energy units. The method comprises the following steps: reclassifying the new energy units accordingto the types and the size of installed capacity of the new energy units, and forming the types of stations associated with the new energy units; selecting a certain type of new energy station, modeling the new energy station by adopting a single fan model and an equivalent fan model respectively, respectively calculating to obtain the contribution value of the new energy unit of the type of station under two different models to a grid-connected point short-circuit current, determining whether to update parameters associated with the equivalent fan model based on the difference between the twodifferent models, and determining parameters associated with the equivalent fan model; and determining the BPA power flow and stability calculation data of each station according to the parameters associated with the determined equivalent fan model, and calculating the contribution value of each station to a relevant bus short-circuit current in a regional power grid under the equivalent fan model. The method of the invention improves the simulation calculation speed and ensures the simulation calculation precision of the short-circuit current contribution value.