Reactive dye inks are the basic consumables for textile digital inkjet printing and the definition of the printed patterns depends on their rheological property. In this research, the influence rules of polyols solvents on rheological behaviors of reactive dye inks were investigated in detail. The reactive dye inks were characterized in terms of dynamic surface tensions and viscosities. Results showed that the surface tensions of inks were affected greatly by the position of hydroxyl groups in polyols solvent molecules and their carbon chain length. The viscosities were influenced obviously by the Van der Waals forces and hydrogen bond forces among the ingredients of reactive dye inks.