Some areas in the north of China, there are occasionally eaten by mistake CangErZi or CangErZi buds and cause poisoning. Service Cangdongzi eaten raw, fried or boiled hot, but also, boiled in water and then drink soup. Serving the least amount of only 5 to 6 grains (children), more than 3,000 grams; serving Cangdongzi buds 50 to 2,000 grams ranging. Poisoning reactions vary in severity. Generally there are dizziness, headache, laziness, loss of appetite, nausea, vomiting, abdominal pain, diarrhea, or fever, facial flushing, conjunctival congestion, urticaria, etc.; in severe cases, there may be irritability or day-long drowsiness, and then coma, convulsions, bradycardia, increased blood pressure, jaundice, hepatomegaly, liver dysfunction, hemorrhage, urinary changes or oliguria, puffy eyelids and so on. It is due to the damage of central nervous system, cardiovascular system, liver and kidney. Most of the poisoned people can recover quickly if they can be treated timely and effectively. A small number of serious poisoning or rescue is not timely, due to massive necrosis of liver cells and lead to hepatic coma, as well as renal failure or respiratory failure and death.

The incubation period of Auricularia auriculae poisoning varies depending on the ingested material, generally 2 to 3 days, the fastest 4 hours to the onset. For example, directly eat raw auricle 4-8 hours after eating the onset of food, eating auricle cake 10-24 hours onset, eating seedlings, 1-5 days onset.