Patients with cystitis should ensure a balanced diet and avoid eating spicy and irritating foods. Eat less lamb, if possible, avoid it entirely. It's beneficial to consume more fruits and vegetables, such as apples, pears, apricots, peaches, persimmons, rapeseed, spinach, and the like. Additionally, avoid eating leftover meals and pickled items, such as salted vegetables. It is best to abstain from alcohol, especially avoid drinking spirits. Do not smoke, it is best to quit smoking. The diet should be light, mainly focusing on light foods, with more steaming and slow stewing.