Electric heating exhaust aftertreatment device

The utility model provides an electric heating exhaust aftertreatment device which is characterized in that an electric heating unit, a urea mixing structure and a catalytic reduction unit are sequentially arranged, a V-shaped clamp is connected with the electric heating unit and the urea mixing structure, and the V-shaped clamp is connected with the urea mixing structure and the catalytic reduction unit; a plurality of temperature nitrogen and oxygen sensor bases are respectively distributed at the front end of the urea mixing structure and the rear end of the catalytic reduction unit, and temperature nitrogen and oxygen sensors are mounted on the temperature nitrogen and oxygen sensor bases; the catalytic reduction unit structure is a honeycomb ceramic structure and is coated with a catalyst layer. According to the electric heating unit, the exhaust temperature is increased; therefore, after-treatment can be carried out during cold start of the engine, and exhaust pollutants in the cold start stage of the e