An electronic atomizing device , comprising: a body defining a liquid storage chamber and an inhalation channel ; and an atomizing element comprising a porous body and a heat generating structure, the porous body comprising a liquid absorbing surface , an atomizing surface , and a side surface , the liquid absorbing surface being configured to absorb liquid from the liquid storage chamber , the heat generating structure being located on the atomizing surface , the porous body forming an airflow channel, the airflow channel flowing through the atomizing surface and being in communication with the inhalation channel , and at least one segment of the airflow channel extending from the side surface towards an interior of the porous body , wherein the porous body comprises a liquid absorbing portion , an atomizing portion , and a liquid guiding portion located therebetween, which are integrally formed; the liquid absorbing surface is located at a side of the liquid absorbing portion away from the liquid guiding portion , and the atomizing surface is located at a side of the atomizing portion away from the liquid guiding portion , characterized in that the airflow channel comprises a plurality of sub-channels, the sub-channel comprises a first sub-channel , a second sub-channel , and a third sub-channel that are sequentially communicated, the first sub-channel is formed by enclosing a sidewall of the atomizing portion , a sidewall of the liquid guiding portion , and an inner wall of the body , the second sub-channel is located inside the liquid guiding portion , the second sub-channel extends from the side surface towards the interior of the liquid guiding portion , the third sub-channel is located inside the liquid absorbing portion , and the third sub-channel is in communication with the inhalation channel . a body defining a liquid storage chamber and an inhalation channel ; and an atomizing element comprising a porous body and a heat generating structure, the porous body comprising a liquid absorbing surface , an atomizing surface , and a side surface , the liquid absorbing surface being configured to absorb liquid from the liquid storage chamber , the heat generating structure being located on the atomizing surface , the porous body forming an airflow channel, the airflow channel flowing through the atomizing surface and being in communication with the inhalation channel , and at least one segment of the airflow channel extending from the side surface towards an interior of the porous body , wherein the porous body comprises a liquid absorbing portion , an atomizing portion , and a liquid guiding portion located therebetween, which are integrally formed; the liquid absorbing surface is located at a side of the liquid absorbing portion away from the liquid guiding portion , and the atomizing surface is located at a side of the atomizing portion away from the liquid guiding portion , characterized in that the airflow channel comprises a plurality of sub-channels, the sub-channel comprises a first sub-channel , a second sub-channel , and a third sub-channel that are sequentially communicated, the first sub-channel is formed by enclosing a sidewall of the atomizing portion , a sidewall of the liquid guiding portion , and an inner wall of the body , the second sub-channel is located inside the liquid guiding portion , the second sub-channel extends from the side surface towards the interior of the liquid guiding portion , the third sub-channel is located inside the liquid absorbing portion , and the third sub-channel is in communication with the inhalation channel . <EOS>