Disclosed is a water inlet assembly (1) of a refrigerator ice machine, the water inlet assembly comprising: a water guiding pipe (11), a positioning pipe sleeve (13), a water pipe base (15) and an elastic sealing sleeve (14). An outer wall of the water guiding pipe (11) is wrapped by a heating layer (12), a first end of the water guiding pipe (11) is used for communicating with a water outlet pipe (16) in the refrigerator ice machine (4), and a second end of the water guiding pipe (11) is connected to the positioning pipe sleeve (13). An inner wall of a port, away from the water guiding pipe (11), of the positioning pipe sleeve (13) is provided with the elastic sealing sleeve (14). The elastic sealing sleeve (14) comprises: a main body portion (140), arranged at the inner wall of the port, away from the water guiding pipe (11), of the positioning pipe sleeve (13); and a radial flanging (141) extending from an outer end of the main body portion (140) along an end face of the positioning pipe sleeve (13). The water pipe base (15) is connected to one end, away from the water guiding pipe (11), of the positioning pipe sleeve (13). Two sides of the radial flanging (141) of the elastic sealing sleeve (14) respectively abut against the end face of the positioning pipe sleeve (13) and the water pipe base (15).