A study was made of the survival, frequency and time of the development of chronic renal failure (CRF) in 712 patients with chronic glomerulonephritis (CGN) treated more than once (2 to 23 times) in the sanatorium Bairam-Ali. It was shown that a more benign course was typical of latent and hypertonic forms among the clinical ones and mesangioproliferative, mesangiomembranous and membranous variants among the morphological variants of CRF. It should be noted that CRF frequency in these groups was lower and developed much later than in the other CGN variants. Prognosis was unfavorable in the patients over 50. The highest survival was noted among the patients aged 20 to 29. Tonsillectomy did not make a positive effect on the CGN course.