Renal insufficiency stage 2 usually refers to chronic kidney disease stage 2, and whether it will affect life expectancy is related to the condition and the treatment effect. If the condition is mild, the treatment effect is good, and the progression of kidney disease is delayed, it may not affect life expectancy; if the condition is severe, the treatment effect is poor, and with the progression of the condition, it may progress to uremia, at which point life expectancy may be affected. Chronic kidney disease is a structural or functional abnormality of the kidney caused by various reasons for ≥3 months. If the patient’s condition is mild, actively treat the primary disease, the treatment effect is good, can delay the progress of chronic kidney disease, at this time may not affect life expectancy; if the condition is severe, the treatment effect is poor, with the development of the disease, may progress to uremia, at this time may affect the patient’s life expectancy. Patients with chronic kidney disease are advised to go to regular hospitals in time and receive standardized treatment under the guidance of doctors.