A cone disk atomizer has been designed for preparation of gelatin/polystyrene magnetic microcapsules for use as microcarriers in anchorage-dependent mammalian cell culture. This apparatus facilitates continuous production of microcapsules and ignores surfactants or organic solvents in traditional emulsion. Compared with the flat-disk atomizer, the feeding flow is subjected to a normal pressure provided by the special cone-shaped disk and liquid slide is dramatically decreased in the cone-disk atomizer. A flow-rate-limitation is observed in both flat-disk atomization and cone-disk atomization. A 36% increase in flow-rate limitation was observed in cone-disk atomization than in flat-disk atomization indicating the potential of this method for large-scale preparations.