With polycystic kidneys, the average life expectancy can be about 60-70 years. Polycystic kidneys are an autosomal dominant disease, so the probability of having children with the disease is very high. In the case of polycystic kidney, kidney cysts often appear when you are a teenager. At this time, it is important to avoid staying up late, overworking, and avoiding foods such as coffee in order to prevent the cysts from growing too fast. At around 40-50 years old, there will be a gradual increase of creatinine and urea, and the renal function decreases, and will eventually develop into uremia stage. After entering uremia, renal replacement therapy is needed, and hemodialysis and peritoneal dialysis are commonly used. With the current level of dialysis in China, polycystic kidney can have a life expectancy of about 20 years on dialysis, which is related to the specific individual situation, as well as the age and condition at the time of entering dialysis. During the period of dialysis, we should also pay attention to control the blood pressure, blood sugar, blood lipid, and regularly take oral iron, erythropoietin and other drugs to prevent the emergence of renal complications and improve the quality of life.