When sweet potato germinates, many enzymes will be produced in the bud. Enzymes are biocatalysts, which can decompose stored substances into substances for bud growth. In the process of transformation, this substance will produce a toxin called solanine, which is an alkaloid and has the functions of hemolysis and stimulation of mucosa. If people eat germinated sweet potatoes, they will have poisoning symptoms such as nausea, vomiting, dizziness and diarrhea. In severe cases, they will also cause paralysis of the heart and respiratory organs and lead to death.