Abstract: 【Purpose/significance】In view of the lack of innovative research on the evaluation of node status in social networks, this paper proposes a new network node evaluation index that is structural power of the node.【Method/process】Firstly, this paper gives the definition and calculation formula of SP, and illustrates the scientific and rationality of SP by examples. Next, takes the informatics research team of 10 universities in China as examples and calculates the SP value of members about 10 scientific research teams. Then,establishes a cooperative network of 10 research teams to obtain the central indicators of the network members. Finally, analyses the correlation between SP value and central index value of scientific research team members.【Result/conclusion】Empirical research shows that the SP indicator is significantly correlated with central indicators. The SP index can take into account the multiple connec tions of other members in the overall network, which is an ideal network node evaluation index based on the overall network connec tion relationship.【Innovation/limitation】The SP index proposed in this study can not only evaluate the central position of a member in the social network node, but also take into account the multiple associations of other members in the whole network. However, when the SP value of a node in the social network changes, the node's ability to control network information and the overall network's ability to receive and disseminate information will also change. How to evaluate the SP value of a node dynamically is a problem that needs to be discussed in the future.