There are two kinds of celery: water celery and celery, which have similar performance; But celery is the best medicine, so it is called "medicinal celery", and its aroma is rich, so it is also called "celery". Celery, because of its pungent taste, has the function of warming and nourishing the stomach, which is ideal for patients with cold, but not for patients with febrile diseases. Domestic celery, whether celery or cress, is rich in nutrition and has medicinal effects. However, wild celery is highly toxic, and eating it by mistake will endanger life. Wild celery and domestic celery are similar in shape, and most of them are born on the roadside or wasteland; Cress grows in a cool and humid place near water or swamp. So we must carefully distinguish between wild celery and wild vegetables.