A conductive full vulcanized thermoplastic elastomer comprising the following components in the form of mixture: (a) thermoplastic plastics; (b) rubber particles having crosslinking structure and having a homogeneous phase structure; (c) conductive fillers; wherein rubber particles of component (b) have mean particle diameter of 0.02 to 1μm and gel content of 60wt% or greater, and the conductive fillers of component (c) are carbon nanotubes; the microscopic phase state of the conductive full vulcanized thermoplastic elastomer is that thermoplastic plastics of component (a) are continuous phase, rubber particles of component (b) are dispersed phase, and carbon nanotubes of component (c) are dispersed in the continuous phase and distributed between the rubber particles; wherein the weight ratio of rubber particles of component (b) to thermoplastic plastics of component (a) is from 30:70 to 75:25, and the content of conductive fillers of component (c) is from 0.3 to 10 weight parts based on the total weight of rubber particles of component (b) and thermoplastic plastics of component (a) of 100 weight parts, wherein the rubber particles having crosslinking structure are full vulcanized powdered rubber prepared by irradiation crosslinking a rubber latex. (a) thermoplastic plastics; (b) rubber particles having crosslinking structure and having a homogeneous phase structure; (c) conductive fillers; wherein rubber particles of component (b) have mean particle diameter of 0.02 to 1μm and gel content of 60wt% or greater, and the conductive fillers of component (c) are carbon nanotubes; the microscopic phase state of the conductive full vulcanized thermoplastic elastomer is that thermoplastic plastics of component (a) are continuous phase, rubber particles of component (b) are dispersed phase, and carbon nanotubes of component (c) are dispersed in the continuous phase and distributed between the rubber particles; wherein the weight ratio of rubber particles of component (b) to thermoplastic plastics of component (a) is from 30:70 to 75:25, and the content of conductive fillers of component (c) is from 0.3 to 10 weight parts based on the total weight of rubber particles of component (b) and thermoplastic plastics of component (a) of 100 weight parts, wherein the rubber particles having crosslinking structure are full vulcanized powdered rubber prepared by irradiation crosslinking a rubber latex. wherein rubber particles of component (b) have mean particle diameter of 0.02 to 1μm and gel content of 60wt% or greater, and the conductive fillers of component (c) are carbon nanotubes; the microscopic phase state of the conductive full vulcanized thermoplastic elastomer is that thermoplastic plastics of component (a) are continuous phase, rubber particles of component (b) are dispersed phase, and carbon nanotubes of component (c) are dispersed in the continuous phase and distributed between the rubber particles; wherein the weight ratio of rubber particles of component (b) to thermoplastic plastics of component (a) is from 30:70 to 75:25, and the content of conductive fillers of component (c) is from 0.3 to 10 weight parts based on the total weight of rubber particles of component (b) and thermoplastic plastics of component (a) of 100 weight parts, wherein the rubber particles having crosslinking structure are full vulcanized powdered rubber prepared by irradiation crosslinking a rubber latex.