In this paper， the steady shear and oscillatory shear mode were applied to explore the influence of the solution mass fraction and blending ratio on the viscosity and rheology behaviors for konjac glucomannan/ hydroxypropyl methyl cellulose (KGM/HPMC) system. The results showed that the KGM/HPMC system was a non-Newtonian fluid， and the increase of system mass fraction and KGM content decreased the fluidity of the composite solution and increased its viscosity at the same time. The molecular chains of KGM and HPMC formed a relative compact structure through hydrophobic interaction in solution state， which was stabilized by increasing the system mass fraction and KGM content. For low mass fraction system， more KGM content was favor for the formation of hot-set KGM/HPMC gel， while more HPMC content was beneficial for the formation of hot-set KGM/HPMC gel in high mass fraction system.