Effects of concentration(6-9%, db) , heating temperature (80-95$^{circ}C$), cooking time (10-50min) and heating method (continuous and instantaneous) on the apparent viscosity of cowpea sediment dispersions at 6$0^{circ}C$ were investigated. The instantaneous heating resulted in higher apparent viscosity than continuous heating regardless concentrations and heating temperatures. The activation energy of the increase rate constant of the apparent viscosity was about 8 kcal/mole. The apparent viscosity of the cowpea sediment dispersion heated to 95$^{circ}C$ and held for 20 min showed a linear relation with the 20 min height at 92.5$^{circ}C$ by viscoamylograph.