A coating apparatus includes a transport roll for transporting a base material, a slit die facing a lower surface of the base material, a coating liquid supply controller for switching on and/or off in supply of a coating liquid to the slit die, and a base material height changing device for ejecting compressed gas onto the lower surface of the base material during a specific period from a termination of the supply of the coating liquid to the slit die to a restart of the supply of the coating liquid to the slit die.