It is not recommended to drink ginger water at night. Ginger itself is a hot food, so eating too much will easily lead to fire, if you drink ginger water at night then it will affect your sleep, so it is not recommended to drink ginger water at night.

Also, ginger is pungent and warm, containing volatile oil, curcumin, resin and starch. Ginger enhances and accelerates blood circulation, stimulates gastric secretion, excites the stomach and intestines, promotes digestion, and has an antibacterial effect.

Eating a little ginger in the morning is good for your health, but eating it at night, because ginger is originally hot, will make people on fire, labor and injury, so it is not advisable to eat. Ginger, which contains volatile oil, can accelerate blood circulation; also contains gingerol, with stimulation of gastric secretion, excitation of the intestinal tract, prompting the function of digestion; ginger also contains gingerol, can reduce the occurrence of gallstones.

The folk proverb has "the family prepared a small ginger, small diseases do not panic", "summer often eat ginger, life to keep well", "winter eat radish summer eat ginger, do not need a doctor to prescribe medicine", "Eat ginger in all seasons, sweep away all diseases", "eat three pieces of ginger in the morning, better than ginseng soup". Many folk proverbs reflect the health effects of ginger.

Reference: Baidu Encyclopedia "ginger water"