A data fusion method facing current situation assessment of a power distribution network is provided. The data fusion method comprises: classifying basic data of the power distribution network; fusing the obtained basic data of the power distribution network; and assessing a current situation of the power distribution network by using the fused basic data of the power distribution network and the like. The data fusion method has the effects that a power supply model group grouping flow suitable for the current situation assessment of the power distribution network is provided; the current situation assessment of the power distribution network is divided into three levels including whole situation assessment, power supply model group situation assessment and single equipment situation assessment; the structure is clear and a weak link of the power distribution network is convenient to find; and the power distribution network can be planned specifically. Beneficial references are provided for planning the power distribution network by planning workers of the power distribution network, and powerful technical supports are provided for the planning work of the power distribution network in the future. The data fusion method is easy to grasp and operate, is simple and clear and can be conveniently and skillfully grasped by actual operators.