Coffee is one of the most popular beverages in the world, and it is becoming integrated into the lives of Chinese urban dwellers. In addition to being a pastime, many people drink coffee as an important beverage for refreshment. Despite this, there are long-standing questions about the safety of coffee. In particular, the effects of caffeine on blood pressure and cardiovascular disease have been controversial. The research in this article tells you that proper coffee consumption is safe and beneficial for patients with hypertension, CVD, heart failure, arrhythmias, or diabetes. Therefore there is no need to restrict coffee consumption in these patients, although some sensitive patients should be cautious. Coffee, something that has now become a necessity in some people’s daily lives, must drink a cup or two or three every day. A cup in the morning, a morning of energy. At noon to a cup, not sleepy in the afternoon. In the evening to a cup of …… night or honestly sleep better. Despite this, there have been long-standing questions about the safety of coffee. In particular, the effects of caffeine on blood pressure and cardiovascular disease have been controversial. For example: Patient: Doctor, I have high blood pressure now, can I still drink coffee? Some people on the Internet say that coffee is bad for the heart, should I give up coffee? Doctor: This depends on your specific case …… coffee is a good thing, but how much and when to drink it is more critical. Some of the older prospective studies or case reports in the past have shown a positive correlation between coffee drinking and the incidence of hypertension and cardiovascular disease. This has been a source of controversy regarding the effects of coffee on blood pressure and cardiovascular disease. Recently, well-designed controlled trials have demonstrated that appropriate coffee consumption (3 to 4 cups/day) is not harmful or even beneficial for blood pressure, CVD, heart failure, arrhythmias or diabetes. This “1 cup” refers to an amount that is generally about 150 mL. A recent report published in February 2017 by Dr. ChrysantSG of the Department of Cardiology at the University of Oklahoma College of Medicine showed that coffee is safe and beneficial for patients with hypertension, CVD, heart failure, arrhythmias, or diabetes. Therefore, there is no need to restrict coffee consumption in these patients, although some sensitive patients should be cautious. Chrysant searched the Medline database for recent evidence published between 2010 and 2016 discussing the effects of coffee on patients with hypertension, CVD, heart failure, arrhythmias, or diabetes mellitus. In terms of blood pressure control, three reviews that included 1,502,218, 172,567, and 170,320 subjects showed that there is no effect of 3 to 6 cups of coffee per day. This report shows that coffee is safe when applied appropriately and is also beneficial in patients with hypertension, CVD, heart failure, arrhythmias or diabetes. Therefore there is no need to restrict coffee consumption in these patients, but certain individuals should still be cautious. Key Messages The old notion that coffee drinking is a risk factor for high blood pressure, heart disease or diabetes is outdated, but some sensitive individuals should be cautious. Recent evidence suggests that coffee consumption is not only harmless, but may have beneficial effects on blood pressure, CVD, heart failure, arrhythmias, and diabetes. Filtered coffee can be consumed by both normal people and people with existing high blood pressure, CVD, heart failure, and arrhythmias, and there is no need for these people to quit drinking coffee. Proper coffee consumption is recommended because excessive consumption can lead to serious or fatal side effects. High-calorie beverages may contain high levels of caffeine and alcohol and are not recommended.