A coating device includes a table, a number of coating housings, a carrier, a number of conveyors, and a number of turntables. The coating housings are separately mounted on the table, and each including a hatch formed thereon. The hatches of all the coating housings face towards a same direction. The carrier are used for carrying one or more products to be coated. The conveyors are distributed on the table around each of the coating housing, and respectively extend into the inside of the coating housing through the hatch for delivering the carrier into the coating housings in turn. The turntables are installed between every two adjacent conveyors for transporting the carrier from a preceding conveyor to a succeeding conveyor according to a predefined route, respectively.