The invention discloses an electric hair dryer non-intrusive identification method based on power and current characteristics. The electric hair dryer non-intrusive identification method comprises the following steps that (1) the voltage and current signals of a main power incoming line are sampled within a certain sampling frequency range; (2) a real-time average active power sequence P(i) and a real-time average reactive power sequence Q(i) are calculated; (3) the maximum current value Imax(j) and the minimum current value Imin(j) of the jth time window are extracted and a new current signal sequence I(j)= Imax(j)+Imin(j) is constructed; and (4) the operation state of the electric hair dryer is judged, and the rated power of the electric hair dryer of the gear is calculated. The problems that the number of the intermittently operating loads in the present household electrical appliances is high, and the steady-state characteristics of the electric hair dryer are similar to those of other electrical appliances without obvious transient characteristics can be solved so that operation and the state of the electric hair dryer can be accurately perceived, the approximate rated power of the electric hair dryer can be provided and thus non-intrusive identification of the electric hair dryer can be realized.