The invention discloses a user communication influence determination method and device, and aims at measuring the communication influence of nodes through less node calculation amount. The method comprises the following steps: forming a communication influence index sequence by adopting the communication influence indexes of multiple orders of a node; and outputting the communication influence index of any order in the communication influence index sequence of the node to measure the communication influence of the node under the condition that the communication influence index of the (n'+1)th order in the communication influence index sequence of the node is equal to the communication influence index of the n'th order of the node. During the calculation of the communication influence index sequence of each node, the node information of all nodes in a topological network is not required and only the node information of neighbor nodes is required, namely, the user does not need to obtain the global information of the topological network and only needs to use the information of all the neighbor nodes of the node, the communication influence of which needs to be measured, so as to complete the calculation, so that the node calculation amount is far less than that of the k-shell decomposition method in the prior art.