Disclosed are a control method and control system of an ice making device, and a refrigerator having the ice making device. The control method of the ice making device comprises the following steps: after finishing ice-turning and before injecting water, receiving first detection data of a detection sensor on an ice making water injection pipe; according to the first detection data, determining whether ice exists in the ice making water injection pipe; and if ice exists in the ice making water injection pipe, turning on a heating assembly. In the present control method of the ice making device, by means of providing the detection sensor and using whether ice is detected by the detection sensor to determine whether the water injection pipe is frozen, the detection method is more accurate, and the freezing state of the ice making water injection pipe can be known more accurately, such that the heating assembly can be activated more efficiently for unfreezing the ice making water injection pipe.