The invention discloses a magnetic nanoparticle inductance temperature measurement method used for electromagnetic heating equipment. The method specifically comprises the following steps that: takingan induction coil as a center, and symmetrically arranging same-direction exciting coils with the same attribute on two sides of the induction coil; placing magnetic nanoparticles on a position of which the temperature is to be detected; and introducing low-frequency alternating current into the two exciting coils, collecting an output voltage signal of the induction coil, and through the linearcorrelation of the output voltage amplitude of the induction coil and magnetic conductivity, and carrying out calculation to obtain magnetic susceptibility generated by the magnetic nanoparticles. Theinvention also provides a device for realizing the above method. By use of the method, the primary harmonic amplitude of the detection signal of the induction coil is obtained, the change amount of the alternating current magnetic susceptibility of the magnetic nanoparticle along with temperature is calculated so as to realize magnetic nanometer temperature measurement, the background interference of ferromagnetic materials in the environment can be eliminated, and the volume of an existing magnetic nanometer measurement device is effectively reduced so as to meet the application requirementof small volume.