The invention relates to a novel tube ice machine. The novel tube ice machine comprises a refrigerating system and a tube ice bucket. A refrigerant compressed and condensed by the refrigerating systemis changed into a liquid state, after being throttled, the liquid state refrigerant flows into the tube ice bucket through a liquid inlet tube of the tube ice bucket to be evaporated, heat of water flowing along the outer wall of a heat exchange tube of the tube ice bucket is absorbed, the temperature of the water is lowered, the water is frozen along the tubular outer wall of the tube ice bucket, and ice making is completed; then the condensed gaseous refrigerant which is not completely liquefied is driven to flow into the tube ice bucket to exchange heat with the made ice, ice removing is conducted, ice making and ice removing operation is conducted repeatedly and alternately, and finally tube ice making is completed; and an intelligent valve is further arranged, an outlet communicateswith the liquid inlet tube of the tube ice bucket, an inlet communicates with a throttled refrigerant channel, through the intelligent valve, bidirectional flowing of the liquid refrigerant can be achieved, and the gaseous refrigerant in the tube ice bucket is blocked and flows reversely through the intelligent valve. According to the technical scheme, the intelligent valve controls one-way flowing of the gaseous refrigerant and bidirectional flowing of the liquid refrigerant, the system and control are simplified, and operation is reliable.