Beidou tea is a kind of health tea. People can't understand its western medicine. Beidou tea is cold, and people who often suffer from heatstroke often drink Beidou tea, so the chance of heatstroke is definitely reduced. People who have a cold can't say that they can cure a cold, but only prevent it. They often drink Beidou tea, because it has the effects of relieving exterior syndrome, dispelling wind, invigorating stomach and promoting digestion. People's detoxification function is strong, people are naturally healthy and have fewer colds. Therefore, it is necessary to strengthen exercise and prevention at ordinary times to avoid heatstroke and colds. People with indigestion, people who often have bloating and indigestion, drink before meals to help digestion, but people with bad spleen and stomach, please drink less.