【Purpose/significance】This paper proposes a method to measure the mobilization ability of opinion leaders in network public opinion. In order to monitor and grasp the emotion guidance of opinion leaders in the field.【Method/process】Based on the action mechanism of field force,three types of mobilization are preset qualitatively. Then put forward three elements of the quantitative measure, including the expanding sentiment, the achieving sentiment and the time of mobilization,and put forward the measure model. Finally, the measurement method is demonstrated by real data.【Result/conclusion】Measurement results contribute a more flexible and targeted way to governance the opinion leaders,and then improve the efficiency of network public opinion management and control.