Though relatively little is known of the physiology involved, there is reduced kidney activity during hibernation. In this experimental study, male Korean chipmunks (Tamias sibiricus barberi) were maintained in cold conditions ($6^{circ}C$) for 9 months, in an attempt to mimic conditions occurring during seasonal hibernation. The examination was made to determine changes of glycoconjugates on the kidney after hibernation by lectin histochemistry. The changes of lectin affinities in the kidney categorize into three groups: a) increase ones only in the early hibernation stage b) increase ones during hibernation and c) decrease ones during hibernation. The transient increase of Con A affinity in the proximal convoluted tubules were demonstrated only in the early cold-treated stage, and PNA and Con A in the distal convoluted tubules and DBA and sWGA in the collecting tubules. SBA affinity tended to increase with hibernation in the proximal convoluted tubules, but sWGA affinities were significantly decreased in the all tubule examined with hibernation. The present results suggest that the glycosylation pattern of the kidney undergoes profound changes during hibernation, and is probably associated with transiently reduced renal function.