A manufacturing method for an ice making device which includes an ice tray, a heater for heating the ice tray, and a drive unit having a drive source for discharging ice pieces from the ice tray and is capable of supplying power to the heater, may include integrating the ice tray with the heater to previously manufacture an ice making unit, and then connecting the ice making unit with the drive unit to manufacture the ice making device. The ice making device in which assembling efficiency can be enhanced and sticking of fragments and dirt to an ice tray can be prevented is manufactured by the above-mentioned method.