Abstract: With the increasing of mining depth，more and more problems in roadway supporting with soft rock are becoming serious.The deformation monitoring and predicting of surrounding rock have important guiding significance for the roadway supporting design and maintenance.The traditional forecasting method is mainly based on the rock mechanics，with complex calculation.Based on the original survey data of the surrounding rock deformation in tunnels，and with the aid of the grey theory，the grey prediction model groups of the soft surrounding rock deformation in tunnels is established，including all data GM(1,1) model，new information GM(1,1) model and metabolism GM(1,1) model.Then，the grey model groups are used to predict the surrounding rock deformation of the roof and floor and the two sides of roadway with soft rock.The research results show that，the grey model groups own a high precision in predicting the deformation.It can reflect the influence of the new information of surrounding deformation to the prediction results and make the prediction results more consistent with the actual situation of surrounding deformation.

Key words: Grey model groups, Roadway with soft rock, Surrounding deformation, Prediction