Primary hyperparathyroidism can be associated with renal impairment such as Nephrolithiasis , Nephrocalcinosis. Hypercalciuria is one of the reason involved in the formation of renal stones.PHPT is associated with decline in renal function however the presentation is asymptomatic. The prevalence of renal manifestations in PHPT is rare, the most commonest being Nephrolithiasis. Other manifestations include Nephrocalcinosis, chronic renal insufficiency, renal tubular dysfunction. Here we report a rare case of PHPT which presented as Nephrocalcinosis with decline in renal function.