A method for estimating the performance of a mixer of the rotor-stator type, characterized in that the method includes the step of: measuring the size of the rotor-stator and the power and flow rate of the mixer; obtaining a total energy dissipation rate ε a by using the Equation 1 given below; obtaining a magnitude of values of a configuration dependent terms for an entire mixer Kc which is the component included in the Equation 1; and estimating the performance of the mixer based on the magnitude of the values for the configuration dependent term for the entire mixer Kc: ε a = ε g + ε s = N p − N qd π 2 ⋅ n r D 3 D 3 b δ D + δ + π 2 n s 2 d 3 d + 4 l 4 N qd n s ⋅ d 2 + 4 δ D + δ N 4 ⋅ t m V = N p − N qd π 2 ⋅ n r ⋅ D 3 K g + K s ⋅ N 4 ⋅ t m V = K c ⋅ N 4 ⋅ t m V In the Equation 1, ε a : Total energy dissipation rate (m 2 /s 3 ) ε g : Local shear stress in the gap between the rotor and stator (m 2 /s 3 ) ε s : Local energy dissipation rate in the stator (m 2 /s 3 ) N p : Number of powers (-) Nqd : Number of flow rates (-) n r : Number of rotor blades (-) D : Diameter of rotor (m) b : Thickness of rotor blade tip (m) δ : Gap between rotor and stator (m) n s : Number of stator holes (-) d : Diameter of stator hole (m) 1 : Thickness of stator (m) N : Number of rotations (l/s) tm : Mixing time (s) V : Flow rate (m 3 ) K g : Configuration dependent term (m 2 ) K s Configuration dependent term in stator (m 2 ) K c : Configuration dependent term for the entire mixer measuring the size of the rotor-stator and the power and flow rate of the mixer; obtaining a total energy dissipation rate ε a by using the Equation 1 given below; obtaining a magnitude of values of a configuration dependent terms for an entire mixer Kc which is the component included in the Equation 1; and estimating the performance of the mixer based on the magnitude of the values for the configuration dependent term for the entire mixer Kc: ε a = ε g + ε s = N p − N qd π 2 ⋅ n r D 3 D 3 b δ D + δ + π 2 n s 2 d 3 d + 4 l 4 N qd n s ⋅ d 2 + 4 δ D + δ N 4 ⋅ t m V = N p − N qd π 2 ⋅ n r ⋅ D 3 K g + K s ⋅ N 4 ⋅ t m V = K c ⋅ N 4 ⋅ t m V In the Equation 1, ε a : Total energy dissipation rate (m 2 /s 3 ) ε g : Local shear stress in the gap between the rotor and stator (m 2 /s 3 ) ε s : Local energy dissipation rate in the stator (m 2 /s 3 ) N p : Number of powers (-) Nqd : Number of flow rates (-) n r : Number of rotor blades (-) D : Diameter of rotor (m) b : Thickness of rotor blade tip (m) δ : Gap between rotor and stator (m) n s : Number of stator holes (-) d : Diameter of stator hole (m) 1 : Thickness of stator (m) N : Number of rotations (l/s) tm : Mixing time (s) V : Flow rate (m 3 ) K g : Configuration dependent term (m 2 ) K s Configuration dependent term in stator (m 2 ) K c : Configuration dependent term for the entire mixer ε a : Total energy dissipation rate (m 2 /s 3 ) ε g : Local shear stress in the gap between the rotor and stator (m 2 /s 3 ) ε s : Local energy dissipation rate in the stator (m 2 /s 3 ) N p : Number of powers (-) Nqd : Number of flow rates (-) n r : Number of rotor blades (-) D : Diameter of rotor (m) b : Thickness of rotor blade tip (m) δ : Gap between rotor and stator (m) n s : Number of stator holes (-) d : Diameter of stator hole (m) 1 : Thickness of stator (m) N : Number of rotations (l/s) tm : Mixing time (s) V : Flow rate (m 3 ) K g : Configuration dependent term (m 2 ) K s Configuration dependent term in stator (m 2 ) K c : Configuration dependent term for the entire mixer <EOS>