A heating control method, a heating control device, and an ice maker are provided. The heating control method is: determining that an ice maker is in the ice-making operation state, and the current water feeding is the first water feeding after a target ice maker is turned on; continuously heating a water inlet pipe for a first preset duration; controlling the water inlet valve to remain closed until the heating for the water inlet pipe ends, ensuring that no ice is present in the water inlet pipe or even if the ice is present, water can be smoothly fed into a water storage tank of the ice maker after the water inlet pipe is heated continuously for the first preset duration.