Some foods may cause indigestion, depending on an individual's digestive system and eating habits. The following are some foods that may cause indigestion:

1. Fried foods: Fried foods are difficult to digest and can easily cause stomach discomfort, including bloating, belching, and nausea.

2. Spicy food: Spicy seasonings such as chili, mustard and curry may irritate the gastric mucosa and cause gastrointestinal discomfort and heartburn.

3. Acidic foods: Acidic fruits and drinks such as tomatoes, citrus, and grapefruit may stimulate gastric acid secretion and cause acid reflux and heartburn.

4. Coffee and tea: Coffee and tea may irritate the gastrointestinal tract, increase gastric acid secretion, and cause digestive problems such as stomach discomfort and heartburn.

5. Dairy products: If the digestive system cannot process lactose, it will cause indigestion symptoms such as diarrhea, abdominal pain and constipation.

6. Indulgent diet: Foods such as high fat, high sugar, high salt and unhealthy fast food may interfere with intestinal digestion and absorption, causing problems such as bloating, diarrhea and constipation.

Therefore, to maintain good digestive health, please develop reasonable, balanced, and diverse eating habits, and avoid excessive consumption of foods that may cause indigestion.