1. Yang deficiency constitution should not drink. Although red dates and black sugar ginger tea can warm the stomach and spleen, but too much drinking will damage the spleen and stomach, Yin deficiency Yang hyperactive people should pay special attention.

2. The gastrointestinal discomfort should not drink. Red dates and black sugar ginger tea has the effect of promoting intestinal peristalsis, if the gastrointestinal discomfort, drinking may stimulate the intestinal tract, causing discomfort aggravated.

3. Children and pregnant women should not drink. Children's digestive system is not yet fully developed, may cause gastrointestinal discomfort; pregnant women may affect the safe development of the embryo after drinking.

4. Asthma patients should be cautious to drink. Although red dates and black sugar ginger tea can dispel wind and dissolve phlegm, it can aggravate asthma symptoms if consumed in excess.

5. People with high blood pressure should not drink more. The brown sugar in black date and black sugar ginger tea contains high sucrose and glucose, which can lead to discomfort such as elevated blood sugar and elevated blood pressure if consumed in excess.