In the state estimation based on hybrid measurement of the phasor measuring unit (PMU) and supervisory control and data acquisition (SCADA), once calculations are based on the traditional nonlinear model, it will face some problems such as difficult to determine PMU measurement calculated weight, inaccurately processing of PMU measurement bad data, the change of phase angle reference point and mature commercial program, etc. In order to solve the above problems, this paper proposes a new secondary linear state estimation method with hybrid measurement. This method uses the voltage amplitude of each node and phase angle estimation of the result based on the convergence of traditional nonlinear state estimation and the PMU measurement to re-calculate the secondary linear state estimation. The effectiveness of the method proposed is illustrated using actual example.