Hawthorn and ebony produce saliva to quench thirst, strengthen spleen and stimulate appetite, and promote bowel movement and defecation. Osmanthus fragrans is warm and pungent, and has the functions of invigorating stomach, resolving phlegm, and treating cough due to excessive phlegm, intestinal wind and bloody dysentery, toothache and halitosis. However, hawthorn and dark plum have strong digestive function, so people suffering from stomach diseases should not drink hawthorn tea on an empty stomach, especially those with hyperacidity, gastritis, gastric ulcer, reflux gastritis and reflux esophagitis. If you want to drink it, you should be comfortable.