Introduction: Hydrocele defined by collection of fluid around the testicle between testicle & tunica vaginalis. Its common in children & adults, many peoples may affect by this disease every year. Its occur approximately at ratio of 1:10 in children’s after birth. Untreated cases should result to infertility, orchitis, epididymitis and finally testicles atrophy. Incidental averages are different from 6% to 30% by human kinds. All of male persons from birth to dying may affect by hydrocele. Method: this is a prospective and descriptive study which data collected by inspection, evaluation & assessment of patients who were examined and become bedded in Balkh regional hospital mazar e Sharif during 1st 3 months of 1402 year. The all collected data analyzed by specific statistical method (SPSS). Aim: occurrences of hydrocele according to age & sex during 1st 3month of 1402 year. Results: this study was performed over 1496 patients who come to Balkh regional hospital and bedded. From bedded patients, 893 case were males and remaining 601 case were females. 156 patients (17.5%) of bedded male had hydrocele and remaining 737 case (82.5%) were bedded during other diseases. From 156 hydrocele cases; 76 case (48.7%) seen in adults and other 80 case (51.3%) were children (ratio 100:95). Among 76 bedded adult patients who had hydrocele, 22cases were operated successfully and others treated none operatively by various reasons. Among 80 cases of children who had hydrocele, 35 patients operated & other treated none operatively. Hydrocele consist 8.9% of male bedded patient and include 0.9% of all referral patients in Balkh regional hospital Mazar e Sharif during 1st 3month of 1402 year. Otherwise, from male bedded patients, hydrocele include 17.5% that 8.5% were adult and 8.9% were children. 28.9% of adult patients were operated & 71.1% treated none operatively (the ratio 1:2.5). 43.7% of children that had hydrocele operated successfully & remaining 56.3% were not operating (ratio were 1:1.3). the right sided hydrocele was more seen in group of 6-10 year (14 case /40%), and lowest were 11-15 aging group (10 case of 35 case). Conclusion: Hydrocele is a disease which commonly seen in children and adults. It can affect individuals in any age. Hydrocele more commonly seen (16.3%) in 11 year of age and then in 3 and 8 age also common. Occurrences are approximately same in children and adults. Right sided hydrocele is funded 2 time more than left sided hydrocele. 69% of 35 cases were seen within inguinal hernia.