The invention relates to a parallel cyclone separator. The parallel cyclone separator comprises a plurality of vertically arranged separation elements, and each of the separation elements is a tangential flow back type cyclone separator; the separation elements share a gas inlet pipe, the gas outlets of the separation elements are commonly connected with a public gas collection chamber, and the dust discharge holes of the separation elements are commonly connected with a public ash bucket; the gas inlet pipe is connected with a vertically arranged distribution pipe with a closed top end, and the bottom gas inlet end of the distribution pipe is connected with the gas inlet pipe; the distribution pipe is circumferentially provided with directional tapered outlets with the number same to the number of the separation elements, the separation elements are symmetrically arranged around the axial center of the distribution pipe, and each of the directional tapered outlets is connected with the gas inlet of the corresponding separation element; and the upper segment of the public ash bucket is cylindrical, and the lower segment of the public ash bucket is a back taper with big top and small bottom. The parallel cyclone separator can improve the distribution uniformity of gas flow entering the separating elements, and obviously inhibits the channeling back mixing problem among the separation elements in a public dust discharge chamber in order to improve the overall separation efficiency of the parallel separator.