Three polymorphs of titania, rutile, anatase and brookite have been known. In this work, brookite was synthesized from anatase by using a shaker ball-milling (NEV-MA8, Nissin-Giken Co., Ltd). Three experimental conditions, weak, medium and strong ball-millings, varied with changing shaking frequency and TiO2 powder mass, were carried out. It has been concluded that the almost single phase of brookite type titania was obtained after 54ks and 72ks ballmilling under the condition of medium intensity. It has been also found that the brookite obtained in this study shows almost the same photocatalytic activity as anatase.