Chronic glomerular nephropathies in children are marked by an often unfavourable evolution, so that the establishing of a prognosis at the time of the diagnosis is both a professional and a moral duty for the pediatric nephrologists. The estimation of the current practice renal survival prognosis in children with chronic glomerular nephropathies, by using clinical and laboratory elements in different histological forms of primitive chronic glomerulonephritis (CGN), with a minimum period of observation of one year. We analyzed parameters that may intervene in the duration of renal survival: type of CGN, age at the debut of the illness, histological scores of activity and chronicity, the presence of tubular atrophy lesions and that of interstitial fibrosis, renal failure (RF) installment time, in cases with normal renal function at the beginning, the time until the initiation of dialysis in cases with ESRF, respectively. The statistic analysis of data has been carried out with Epi soft (Fischer test). The results have been as follows: unfavourable evolution has been taken into consideration in the cases which have presented fixed nitric retention or which required the initiation of dialysis. The initiation of dialysis was necessary in 19 cases (76%), out of which 11 (44%) having associated between 4 and 6 of the considered risk factors. If the histological type (SFGS, DGS, MPGN) is added to the obtained score, the accuracy of the estimation increases to 89%. In conclusion, the usage of prognosis scores composed of current elements of diagnosis that have proven to have statistical significance, as far as the renal survival prognosis is concerned, may allow the invoking of a medium-term prognosis in the evolution of children with CGN.