Patients with chronic bronchitis should pay attention to a light diet, consuming more fresh vegetables such as cabbage, spinach, rapeseed, white radish, carrots, tomatoes, cucumbers, and winter melon. They should also include soybeans and their products, which are rich in high-quality protein. It is advisable to avoid seafood and overly fatty foods like yellow croaker, hairtail, shrimp, crab, and fatty meat.