The present invention relates to an ice maker. Specifically, according to one embodiment of the present invention, an ice maker may be provided, comprising: a refrigerant pipe having formed therein a pipe flow path for a refrigerant to flow through; a finger protruding from the refrigerant pipe and having formed therein a finger space that communicates with the pipe flow path for the refrigerant to flow through; a heater comprising a heating part provided in the refrigerant pipe to heat the finger, and an extension part extending from one end of the heating part to the outside of the refrigerant pipe; a heater holder that surrounds at least a portion of the extension part; and a sealing element for preventing the introduction of moisture through a gap between the outer peripheral surface of the extension part and the inner peripheral surface of the heater holder.