Tongue numbness after eating pineapple is considered to be allergic, can be relieved by drinking light salt water, drinking milk, such as ineffective or symptoms worsening, it is recommended to immediately consult a doctor for anti-allergy (such as loratadine, etc.) and other treatments. Pineapple contains a substance called bromelain, which breaks down proteins in the body and stimulates the mucous membrane of the mouth, resulting in numbness of the lips and tongue. After the above situation, you can drink some light salt water, salt can effectively inhibit the stimulation of bromelain on the oral mucosa, reduce the symptoms of numbness of the tongue; and bromelain enzyme can be reacted with proteins, so drink milk can also relieve the enzyme on the oral cavity irritation caused by numbness discomfort symptoms. If there is no relief after the above treatment, or the symptoms gradually aggravate, or other discomforts such as skin rash, abdominal pain, etc., it is recommended to consult a doctor immediately for anti-allergy (e.g., loratadine) and other treatments. Tongue numbness after eating pineapple can be handled according to the above methods, if ineffective or symptoms worsen, it is recommended to consult a doctor immediately to avoid delaying the condition.