It is generally not recommended to drink. In the process of preservation, if the coffee is not properly preserved, it is easy to get damp and mildew inside. However, it is not recommended to eat coffee after it has expired for 3 months. At this time, harmful substances such as bacteria have been bred inside the coffee, which is harmful to human health and often accompanied by diarrhea, abdominal pain and other discomfort symptoms. It is recommended that coffee be used as fertilizer after it expires. If you accidentally drink expired coffee, your body has no obvious discomfort symptoms, and there is generally no big problem. If you have obvious symptoms such as nausea and vomiting after eating it, it is recommended to stop eating immediately and go to the nearest hospital for treatment, so as not to delay affecting your health.