1, Bad ingredients: Adding bad ingredients to milk tea will increase the burden of gastrointestinal tract, affect the function of digestive tract and induce diarrhea symptoms.

2, food deterioration: milk tea food has a high sugar content, which is easy to induce bacterial infection. After eating spoiled food, it can induce gastrointestinal inflammation, accompanied by symptoms such as diarrhea, abdominal pain and nausea.