The symptoms of bismuth poisoning are as follows: 1, acute bismuth poisoning, acute bismuth poisoning after the manifestation of oral mucosa ulceration, gum bleeding, gastrointestinal irritation symptoms will be more obvious will appear severe abdominal pain, diarrhea, nausea, vomiting, poor nausea, etc.. Bismuth acute poisoning can also damage the nervous system and cause headache, dizziness, mental abnormalities, speech disorders, etc. It can also cause muscle spasms, ataxia, muscle tremors, etc. In addition, some people are allergic to bismuth when acute bismuth poisoning and lead to systemic symptoms, there will be a general rash, fever, acute hemolytic performance will make the whole body bleeding. 2, bismuth chronic poisoning after the main symptoms are manifested as stomatitis, chronic neuritis and gums with black lines.