The rheology of cement ground limestone pastes was tested at a constant shear rate by means of RHEOLAB QC rotating viscometer at various temperatures, and the static yield stress, structural build up rate and plastic strain energy of pastes were measured to characterize the effect of temperatures on role of ground limestone in structural build up of pastes. The results show that the cement ground limestone paste is a viscoelastic fluid at shear rate of 01s-1. The temperature affects the role of ground limestone in cement paste, with the increase of ground limestone content, the static yield stress of the paste increases at 20℃, but there is little effect at 5℃, 10℃ and 30℃. At 20℃ and 30℃, the structural build up rate increases first and then decreases with the increasing ground limestone content, and the structural build up rate reaches the maximum when the ground limestone content is 10%, and the ground limestone content has no effect basically at 5℃ and 10℃. The plastic strain energy increases with increasing ground limestone content at 5℃, 10℃, and 20℃, but it basically remains stable at 30℃. When the ground limestone content is the same, the plastic strain energy increases first and then decreases with the rise temperature and reaches the maximum at 10℃.