The benefits of hot water bag are roughly as follows: first, it can treat common diseases that cause pain symptoms, such as lumbar disc herniation, lumbar muscle strain, cervical spondylosis and so on. Local hot packs can promote blood circulation, accelerate the inflammatory response to subside, thereby relieving local pain symptoms; second, the treatment of insomnia and cervical dizziness, neck hot packs will make the cervical artery gradually relax, lift the spasm, restore the normal blood supply, thereby relieving cervical dizziness, while hot water bag hot packs can also be directed to the neck acupuncture points for the treatment of insomnia; third, the treatment of diseases that cause coughing, such as influenza, chronic bronchitis and so on. Third, the treatment of diseases that cause cough, such as influenza, chronic bronchitis, etc., hot compresses on the back, can make the blood circulation in the chest cavity faster, promote the respiratory system inflammatory response to subside, lift the spasm of fine bronchial tubes, you can ease the symptoms of coughing.