OBJECTIVES: a) To study the different location of the testis in children with imperfect descent of testis, b) To study associated anomalies and complications of imperfect descent of testis, c)To study the various modalities of management of imperfect descent of testis.BACKGROUND DATA: Since the testis originally develops in the abdominal region, its descent may be inhibited anywhere along its normal pathway or it may be diverted from this route in to an ectopic location. This apparently simple developmental anomaly represents one of the more common disorders of the childhood.It affects all races, and there does not seem to be a geographic propensity. undescended testis may be associated with a number of chromosomal and hereditary disorders in which a specific defect can be identified, and complications which are infertility, hernia, trauma are more if left untreated and also interestingis that till today relatively little is known about what cause the testis to migrate from the abdomen in to the scrotum, inspite of research which is going on till now.METHOD: Present study was conducted on 50 patients who presented with complaints of undescended testis and its complications within the age of day 1 of birth to 18 years. It was prospective study and study was done at department of pediatric surgery, Kempegowda institute of medical sciences, Bangalore during study period of December 2011 to May 2013.RESULTS: 1. Imperfect descent of testis is more common in2-5 years of age, 2. Right side is more common followed by left side followed by bilateral, 3. Absence of testis in scrotum with underdeveloped scrotum is the most common complaint, 4. In palpable testis superficial pouch is the most common site where the testis is found. 5. In ectopic femoral is the most common. 6. In impalpable testis most common is canalicular. 6. Gubernacular abnormalities were most common followed by presence of processusvaginalis and hernia sacs. 7. Open orchidopexy for palpable and lap orchidopexy for impalpable testis is the operation performed.CONCLUSION: Many of undescended testis descend within one year of age, hence we should wait till one year of age. Orchidopexy for undescended testis should be done within 2 years of age as histopathological change start from 2 years of age till 16 years where irreversible histopathological changes take place. Retractile testis has no role in surgery and only assurance should be given. Routine preoperative imaging for undescended testis is neither necessary nor helpful. Ultrasound or MRI do not localizes a truenon palpable testis and hence does not alter surgical management. So laparoscopy should be used directly for evaluation of children with impalpable undescended testis.