Boiled ginger can relieve cold cough to some extent, but the effect of medication in water is limited, and should be consulted promptly. Ginger has the effect of relieving cold (removing cold from the surface of the muscle), warming and stopping vomiting (treating vomiting caused by stomach cold by warming the spleen and stomach), warming the lungs and stopping coughs (stopping coughs by warming the lungs), and is used for mild wind-cold cold, cold in the middle jiao or cold in the spleen and stomach (spleen and stomach weak and cold), resulting in cold pain in the stomach and epigastric region, eating less, vomiting and coughing caused by cold in the lungs and other conditions. Cough can be caused by a variety of visceral pathologies, ginger has a certain relief effect on cough caused by lung cold, but not for all types of cough. If you have a cough, it should be treated under the guidance of a TCM doctor, and you should not use ginger in water on your own.