The invention relates to a determination method for power grid safety aggregative indicators. The method comprises the following steps: selecting 15 power grid safety basic indicators according to an actual power grid research result; determining a calculation formula by combining indicator constitutive property, indicator adaptability and dimension consistency; calculating initial weight of the 15 safety basic indicators under the aggregative indicators by adopting an analytic hierarchy process; revising the obtained weight of the step (2) by using a variable weight penalty function; calculating the power grid safety aggregative indicators by using the final weight; carrying out safety grade division and exhibition on a power grid operation state; drawing a power grid safety indicator movement track map. According to the determination method, the power grid safety basic indicators are screened in view of engineering functionization and the calculation formula is designed; the variable weight penalty function is introduced on the basis of obtaining all the weights by the analytic hierarchy process to be used for revising heavy-load or out-of-limit indicator weights, and current and future situations of a power grid are determined; a direct power grid situation monitoring means is provided for schedulers by the power grid safety indicator movement track map.