The invention discloses a cosmetic raw material emulsifying device, which comprises a placing table, a supporting column, a transverse supporting column and a stirring apparatus, a transmission apparatus and an extending apparatus are arranged on the stirring apparatus, and the transmission apparatus comprises a rotating disc, a handle, a fixing groove, a transmission rod and a bearing; the extending apparatus comprises a first stirring rod, a first fixing block, a first U-shaped groove, a sliding plate, a second fixing block and a slender rod, by arranging the transmission apparatus, downwardforce applied by the rotating disc can be stably transmitted, and when the transmission rod rotates, friction to the inner wall of the fixing groove is reduced through the bearing, so that more laboris saved during rotation of the rotating disc; meanwhile, under the action of the transmission rod, the power of the rotating disc can be well transmitted to a lower part; by arranging the extendingapparatus, the distance between the first stirring rod and a second stirring rod can be adjusted, the distance is not limited by the size of an emulsifying barrel any more, the stirring apparatus doesnot need to be replaced according to the size of the emulsifying barrel any more, and meanwhile cosmetics can be emulsified more sufficiently in the emulsifying barrel.