An electronic cigarette vaporizer, which can be connected with a battery component to constitute an electronic cigarette, comprising: a hollow vaporizer housing and a vaporizing device sleeved inside the vaporizer housing; wherein the vaporizer housing has a mouthpiece end and an opening end, a mouthpiece is arranged in a center of the mouthpiece end, a vapor outlet tube extending inside the vaporizer housing in an inward direction from the mouthpiece to a middle portion of the vaporizer housing is arranged, and the opening end is arranged with a connecting device for connection with the battery component; wherein the vaporizing device is disposed in the vaporizer housing at one side where the opening end is formed, and the vaporizing device comprises a vapor tube sleeve, a throttle lid, a heating unit, a vaporizing base and an electrode lid, which are arranged in turn towards an outer side from an inner side, and the heating unit comprises a liquid guiding strip and a heating coil wound around a middle portion of the liquid guiding strip; wherein the vapor tube sleeve is cup-shaped and sleeved onto an outer wall of an opening end of the vapor outlet tube, and a vapor outlet hole is formed at a bottom of the vapor tube sleeve; wherein the throttle lid is provided with a center hole and throttle orifices, an inner wall of an upper portion of the center hole abuts against an outer wall of the vapor tube sleeve, an outer circumferential wall of the throttle lid abuts against an inner wall of the vaporizer housing, and a liquid storage chamber is formed between an upper side of the throttle lid, the outer wall of the vapor outlet tube, and the inner wall of the vaporizer housing, wherein the throttle orifices are in communication with the liquid storage chamber, a lower side of the throttle lid is provided with an annular ring protruding downwards from the inner wall of the center hole, and a bottom of the annular ring is formed in a radial direction with upper grooves which accommodate an upper half of the liquid guiding strip extending transversely and divide a lower portion of the annular ring into two half annular rings; wherein a concave cavity extending downwards is formed at a center of an upper end of the vaporizing base, and a first air inlet is provided at a bottom of the concave cavity, lower grooves which accommodate a lower half of the liquid guiding strip extending transversely are formed in a radial direction at two sides of the concave cavity on the upper end of the vaporizing base, and half annular grooves for accommodating respective half annular rings are provided at two sides of the grooves and around the concave cavity; wherein the throttle lid fits tightly over the vaporizing base, the upper grooves and the lower grooves are vertically aligned with each other and joined to seal the liquid guiding strip, the liquid guiding strip extends between the upper grooves and the lower grooves, the half annular rings are sealingly received in the half annular grooves, a vaporizing chamber is defined between the concave cavity and the bottom of the vapor tube sleeve, and the throttle orifices are in communication with two end portions of the liquid guiding strip; wherein the electrode lid is disposed at a bottom of the vaporizing base and is fixed to an inner wall of the opening end of the vaporizer housing, the electrode lid is arranged with positive and negative electrodes for electrically connecting with two ends of the heating coil, and a second air inlet is provided at a center of the electrode lid.