The invention discloses a disposable atomizer of an
electronic cigarette, comprising a battery component and an atomizer, wherein the atomizer comprises an atomizer cover, a rubber sleeve, an atomizer sleeve, a tobacco
tar cotton, two wires, a heating wire, a rubber pad, a threaded sleeve, a propping pin, a first fibre
pipe, a
tar guide
rope and a second fibre
pipe; the heating wire is connected with one ends of both wires, and each of the other ends of the wires is fixedly connected with the propping pin; the heating wire and the
tar guide
rope are wound around together; the first fibre
pipe is arranged in the tar guide
rope, the second fibre pipe and the first fibre pipe are coaxially arranged, and the second fibre pipe is positioned behind the first fibre pipe; both the tar guide rope and the second fibre pipe are arranged in the tobacco tar cotton, and both the tobacco tar cotton and the threaded sleeve are arranged in the atomizer sleeve; the atomizer cover is arranged at the
tail end of the atomizer sleeve; and the rubber sleeve is arranged in the atomizer sleeve and positioned between the second fibre pipe and the atomizer cover. So that the disposable atomizer of an
electronic cigarette has the advantages of simple production process, high production efficiency and low labor cost.