Disclosed is a wind power and thermal power external transmission power transmission curve researching method specific to wind power peak-shaving requirement. The researching method has the main technical characteristics in that a wind power probability model based on wind power external transmission peak-shaving demand is established by referring to section classification and an idea of typical curve selection; by combination with the wind power probability model, matched thermal power capacity and external transmission channel capacity and other parameters, a wind power and thermal power external transmission optimization operation model is established; and under the premise of transmitting new energy preferably and satisfying operation constraint of a thermal power generation unit, the model can fully utilize the power transmission channel space to realize maximization of electric quantity transmission. Compared with the conventional method, the analysis and calculation accuracy is improved; and in addition, all-process analysis of daily operation period is realized, the wind power peak-shaving requirement can be reflected clearly and visually, and actual engineering operation by a system planning staff can be promoted.