The invention discloses a high-accurate microblog forwarding predicting method, and belongs to the technical fields of microblog prediction and data mining. The high-accurate microblog forwarding predicting method mainly comprises the following steps: establishing a microblog user relationship network after deeply mining a corresponding microblog user relationship; calculating a weight of each user according to the microblog user relationship, and then predicting microblog forwarding of a microblog to be predicted. According to the high-accurate microblog forwarding predicting method disclosed by the invention, a weight-based directed relationship network is utilized to describe forwarding possibility of different microblog users, through establishing a forwarding relationship digraph network, a corresponding total forwarding number and a proportion of followers in the total forwarding number are calculated, corresponding weights are given to describe different forwarding probabilities, so as to predict the microblog forwarding, so that prediction accuracy is improved, especially for a microblog forwarding network with two-layer forwarding relationships, and therefore the prediction accuracy is obviously improved.