Provided is an emulsified cosmetic composition having an excellent UV-protective effect, an excellent transparent feeling, an excellent feeling upon application, and an excellent long-term stability. The emulsified cosmetic composition is characterized by containing a powder which is produced by subjecting a zinc oxide powder (A) having an average particle diameter of 0.1 to 1 μm, an average particle thickness of 0.01 to 0.2 μm, and an average aspect ratio of 3 or more to surface treatment with a silane or silazane compound having a C1-20 alkyl or fluoroalkyl group and having reactivity with an inorganic oxide.