Pork is a daily food for people. Pig thyroid is brown, located near the larynx and below the trachea, commonly known as chestnut meat. The adrenal gland is located above the kidney, commonly known as kidney, and is reddish brown. Thyroid gland and adrenal gland are forbidden to eat. This is because the thyroid gland and adrenal gland are endocrine glands, which contain a lot of hormones. After people eat it, hormones can easily cause endocrine disorders in the human body, thus causing corresponding poisoning symptoms. Therefore, thyroid and? Adrenal glands are inedible. Pigs should also avoid eating if they have swollen, congested and inflamed lymph nodes.