There is no scientific evidence for the claim that wood ear vegetable causes cancer, and it is not credible. Wood ear vegetable contains many nutrients such as vitamins, minerals and dietary fiber that are needed by the human body, and eating wood ear vegetable is beneficial to the human body. Wood ear vegetable is rich in beta-carotene, this carotene has a protective effect on the liver, but also can assist the liver to reduce cholesterol, moderate amount of eating wood ear vegetable for lowering blood lipids has a certain auxiliary effect. There is a large amount of calcium in wood ear vegetable, moderate consumption can supplement the body’s calcium content, these are beneficial for the elderly who lose calcium quickly and are prone to chronic diseases such as hypertension and hyperlipidemia. It is also a good ingredient for people who are prone to constipation and fire. Although mullein is a vegetable rich in nutrients, from the perspective of traditional Chinese medicine, it is cold in nature and can cause abdominal pain, diarrhea and other gastrointestinal symptoms when consumed in excess. Therefore, it is recommended to consume mullein in moderation and not in excess to avoid gastrointestinal reactions and adverse effects on the organism.