Drinking coffee has a certain role in suppressing appetite. Coffee mainly contains caffeine, which can stimulate the brain center, play a refreshing brain, invigorate the spirit, eliminate fatigue; excitation of the sympathetic nervous system can increase the heart rate, promote blood circulation, enhance the metabolism, etc.; coffee in the dietary fiber can also promote gastrointestinal peristalsis to relieve constipation, enhance digestion. Drinking coffee stimulates the sympathetic nervous excitement, will play a role in suppressing the appetite. However, excessive consumption of coffee can cause sleep disorders and anxiety. Although coffee has the effect of appetite suppression, but should be consumed appropriately, if for weight control or weight loss, should be under the guidance of a doctor to choose a scientific method.