There is no harm in drinking light salt water at night, but it is best to drink honey water at night and light salt water on an empty stomach in the morning, because there is no water in the body after getting up and metabolizing for one night in the morning. Supplementing light salt water at this time can effectively balance water, stimulate intestinal peristalsis and relieve constipation. I suggest you develop good habits, insist on drinking light salt water in the morning and honey water at night, and you will find benefits after a while!