The first one has a refreshing effect. This is because black coffee contains a lot of caffeine, which has a strong bitter taste and can stimulate the nervous system and heart of the human body. Therefore, proper application of black coffee can achieve the effect of refreshing the brain, relieve brain fatigue, and is beneficial to diuresis and cardiovascular system. The second is the effect of making people happy. With the continuous progress of society, young people now regard black coffee as a fashionable leisure drink. After busy work, they all hope to drink a cup of strong black coffee to relieve fatigue and treat it as a spiritual enjoyment. Experimental research shows that drinking a cup of black coffee every day will have a good influence on people's mood. The above is about the effect of Guangyuan Tangyou on cutting black coffee. Although black coffee is of great help to our lives, we still suggest that everyone drink black coffee in moderation, which will be more conducive to our health.