Eating chard is usually not recommended for people with polycystic kidney. Small vegetables are usually pickled and processed products, and their salt content mostly exceeds the standard. Long-term excessive high-salt diet may lead to elevated blood pressure, while increasing the burden on the kidneys and aggravating the rate of deterioration of kidney function. Therefore, patients with polycystic kidney try to avoid eating small vegetables. In addition, patients with polycystic kidney should try to avoid strenuous exercise and external impact on the back in order to prevent the rupture of cysts. If the kidney function further deteriorates in the late stage, patients are advised to have a high-quality low-protein diet and a low-potassium and low-phosphorus diet, etc. Polycystic kidney patients are recommended to visit regular hospitals in time and standardize treatment under the guidance of doctors.