Yes, it has the effect of losing weight. Coffee can accelerate fat burning, but after all, it is not a diet drug, and the effect is not obvious. To lose weight, you should eat less greasy food and exercise more. Black coffee tastes terrible without sugar, just like Chinese medicine. It is suggested that a cup of honey water and a spoonful of white vinegar in the morning have a good weight loss effect. Don't eat fruit at night, and take time to exercise at ordinary times, which is good for losing weight.