A multifunctional electronic smoking device for circumferentially heating, comprising: a main body, wherein the main body is provided with a slide switch, a main switch and a heating assembly; and an atomizing assembly; wherein the atomizing assembly is detachably embedded and connected to the main body; wherein the main body further comprises an inner housing, an electrical core, and an airflow sensor; and the inner housing comprises a heating chamber and an atomizing chamber, wherein the heating chamber is connected to the atomizing chamber through an air inlet slot for ventilation; wherein the heating chamber is provided with a heating assembly; the heating assembly comprises a heating cup, a fixed sleeve, an outer housing and a snap holder; a bottom and an opening of the heating cup are fixed in the outer housing by the snap holder and the fixed sleeve, respectively; a gap is arranged between the heating cup and the outer housing, and is filled with a thermal insulation layer; and a temperature sensor is arranged on an outer wall of the heating cup; wherein the heating cup is a heating glass cup, and a heating element on the heating cup is a resistance-type printed heating circuit; wherein the atomizing assembly comprises an atomizing holder, an e-liquid storage cover and an e-liquid storage chamber; the e-liquid storage chamber is fixed on the e-liquid storage cover; and an atomizing wire is arranged on the atomizing holder, and is electrically connected to an electrode; wherein the slide switch comprises a Hall element, a magnet, and a push button; the Hall element is fixed to the inner housing; the magnet is fixed on the push button; the Hall element is located a position allowing the Hall element to sense a presence of a magnetic field of the magnet when the push button slides to a first position, and to sense a disappearance of the magnetic field of the magnet when the push button slides to a second position; wherein a sensor airflow passage is defined by a gap on an outer housing of the smoking device, a gap between the airflow sensor and the inner housing, and an air hole of the bottom of the heating cup; the heating chamber is connected to the atomizing chamber through the air inlet slot for ventilation, so as to define a smoke airflow passage; the sensor airflow passage is arranged in parallel with the smoke airflow passage and is connected to an airflow of the smoke airflow passage through a vent hole for ventilation; a ventilation connection point is located on an upstream side of the heating assembly and is located on a downstream side of the smoke airflow passage; and the airflow sensor is located in the sensor airflow passage. a main body, wherein the main body is provided with a slide switch, a main switch and a heating assembly; and an atomizing assembly; wherein the atomizing assembly is detachably embedded and connected to the main body; wherein the main body further comprises an inner housing, an electrical core, and an airflow sensor; and the inner housing comprises a heating chamber and an atomizing chamber, wherein the heating chamber is connected to the atomizing chamber through an air inlet slot for ventilation; wherein the heating chamber is provided with a heating assembly; the heating assembly comprises a heating cup, a fixed sleeve, an outer housing and a snap holder; a bottom and an opening of the heating cup are fixed in the outer housing by the snap holder and the fixed sleeve, respectively; a gap is arranged between the heating cup and the outer housing, and is filled with a thermal insulation layer; and a temperature sensor is arranged on an outer wall of the heating cup; wherein the heating cup is a heating glass cup, and a heating element on the heating cup is a resistance-type printed heating circuit; wherein the atomizing assembly comprises an atomizing holder, an e-liquid storage cover and an e-liquid storage chamber; the e-liquid storage chamber is fixed on the e-liquid storage cover; and an atomizing wire is arranged on the atomizing holder, and is electrically connected to an electrode; wherein the slide switch comprises a Hall element, a magnet, and a push button; the Hall element is fixed to the inner housing; the magnet is fixed on the push button; the Hall element is located a position allowing the Hall element to sense a presence of a magnetic field of the magnet when the push button slides to a first position, and to sense a disappearance of the magnetic field of the magnet when the push button slides to a second position; wherein a sensor airflow passage is defined by a gap on an outer housing of the smoking device, a gap between the airflow sensor and the inner housing, and an air hole of the bottom of the heating cup; the heating chamber is connected to the atomizing chamber through the air inlet slot for ventilation, so as to define a smoke airflow passage; the sensor airflow passage is arranged in parallel with the smoke airflow passage and is connected to an airflow of the smoke airflow passage through a vent hole for ventilation; a ventilation connection point is located on an upstream side of the heating assembly and is located on a downstream side of the smoke airflow passage; and the airflow sensor is located in the sensor airflow passage.