The invention discloses an electronic cigarette atomizer with an atomizing cover, which is used for connecting with a battery assembly of an electronic cigarette to form the electronic cigarette. Theelectronic cigarette atomizer with the atomizing cover comprises a casing, which is closed in the upper end, is opened in the lower end and is hollow; the inside of the casing is sequentially providedwith a liquid storage chamber, the atomizing cover, an atomizing chamber, an atomizing unit, an atomizing seat and a base from top to bottom; the base is sealed at a lower end opening of the casing,the upper end of the casing is provided with a suction port, the suction port is downwardly provided with a casing smoke pipe integrally connected with the casing, and the casing smoke pipe is a conical pipe with the smallest pipe diameter and gradually expanding from the middle to the upper and lower ends; the atomizing unit comprises a liquid guiding strip and a heating wire arranged in the middle of the liquid guiding strip, and an air passage is arranged in the atomizing seat in the up and down directions. According to the electronic cigarette atomizer with the atomizing cover, the beneficial effect is that the electronic cigarette atomizer with the atomizing cover is provided with the unique atomizing cover, so that the volume of the atomizing chamber is increased to increase the atomization amount of smoke liquid, and a liquid supply orifice is arranged in the wall of the atomizing cover to reduce the risk of liquid leakage.