The densities and viscosities of ternary systems (Poloxamer 188 + ethanol/acetone + water) were measured at 288.15, 293.15, 298.15, 303.15, 308.15 K and atmospheric pressure for different mass fractions of Poloxamer 188 (0 to 0.02) in aqueous solution and different solvent volume fractions of ethanol/acetone (0 to 0.3) in Poloxamer 188 aqueous solution. The densities were measured by a pycnometer, while the viscosities were measured using two Ubbelohde capillary viscometers. The correlations of density and viscosity of these ternary systems are obtained by fitting the experimental data at different temperatures, mass fractions and volume fractions.