The invention relates to a linearization calculation method of a data driven power grid power flow equation for measuring noise robustness and belongs to the technical field of power grid power flow calculation and data driving. The linearization calculation method comprises the following steps: firstly, sorting out power grid historical data; then solving a linearization power flow equation parameter, solving a parameter initial value of the power flow equation, roughly adjusting the parameter and finely adjusting the parameter; finally, carrying out power grid real-time power flow calculation by utilizing the solved linearization power flow equation. According to the linearization calculation method provided by the invention, linearization is carried out on the power flow calculation byutilizing the power grid historical data, and the noise robustness in the data is measured; the precision of the power grid power flow calculation can be reduced and the calculation amount in a powergrid operation process is reduced; the operation cost of a power grid is easy to reduce; the method has a wide application prospect in the fields including power grid risk evaluation and calculation on more uncertainty analysis and the like; the method sufficiently considers noises in the measured data and meets conditions in the actual power grid better.