An atomizer capable of refilling tobacco liquid comprising: an atomizing body with a liquid storage chamber formed therein; the atomizing body has an injection end for injecting tobacco liquid, the injection end of the atomizing body has a liquid inlet communicated with the liquid storage chamber; an end cover, movably arranged on an end of the atomizing body and capable of reversibly moving from a first place to a second place, when the end cover is at the first place, the liquid inlet is closed, when the end cover is at the second place, the liquid inlet is opened; and an elastic element, configured to supply an elastic force on the end cover opposite to a moving direction of the end cover, during that the end cover is moving from the first place to the second place; wherein the end cover comprises a sealing strip movably sliding between the first place and the second place, the sealing strip is configured for sealing or opening the liquid inlet; characterized in that: the elastic element is a W-shaped spring; two ends of the W-shaped spring are fixed on the injection end of the atomizing body so that a deforming force is applied to the sealing strip; wherein the injection end of the atomizing body has two positioning poles for connecting the W-shaped spring, a middle part of the W-shaped spring is clamped with a connecting pole of the sealing strip, the connecting pole deviates from a line connecting the two positioning poles. an atomizing body with a liquid storage chamber formed therein; the atomizing body has an injection end for injecting tobacco liquid, the injection end of the atomizing body has a liquid inlet communicated with the liquid storage chamber; an end cover, movably arranged on an end of the atomizing body and capable of reversibly moving from a first place to a second place, when the end cover is at the first place, the liquid inlet is closed, when the end cover is at the second place, the liquid inlet is opened; and an elastic element, configured to supply an elastic force on the end cover opposite to a moving direction of the end cover, during that the end cover is moving from the first place to the second place; wherein the end cover comprises a sealing strip movably sliding between the first place and the second place, the sealing strip is configured for sealing or opening the liquid inlet; characterized in that: the elastic element is a W-shaped spring; two ends of the W-shaped spring are fixed on the injection end of the atomizing body so that a deforming force is applied to the sealing strip; wherein the injection end of the atomizing body has two positioning poles for connecting the W-shaped spring, a middle part of the W-shaped spring is clamped with a connecting pole of the sealing strip, the connecting pole deviates from a line connecting the two positioning poles. the elastic element is a W-shaped spring; two ends of the W-shaped spring are fixed on the injection end of the atomizing body so that a deforming force is applied to the sealing strip; wherein the injection end of the atomizing body has two positioning poles for connecting the W-shaped spring, a middle part of the W-shaped spring is clamped with a connecting pole of the sealing strip, the connecting pole deviates from a line connecting the two positioning poles.