During acute bronchitis, it's important to pay attention to your diet and mainly consume liquid or semi-liquid foods. You can eat porridge, soup noodles, vegetable soups, or stewed soups. Additionally, it's appropriate to eat some pears or grapefruit. Other fruits like apples are also good choices. These fruits contain a rich amount of vitamins that can enhance your immune system. Vitamin C in particular has anti-inflammatory and bactericidal effects, which can help in the treatment of bronchitis. It is advised to maintain a light diet during illness and avoid spicy, greasy, cold, and irritating foods. Furthermore, consider having some honey water, or foods like loquat, lily, or mung beans which can also be appropriate. Drinking these ingredients made into porridge or soup is also beneficial.