Color Doppler ultrasound examination of parotid gland found low echo dark area with clear boundary and diameter of about 2 cm, so the possibility of cyst should be considered. Combined with clinical symptoms, surgical resection should be considered as soon as possible after diagnosis. Take more rest after operation, have a reasonable diet and nutrition, pay attention to cold and warmth, and have a healthy diet, and see a doctor regularly. Avoid frying, frying, spicy and irritating food.