A hypoplastic empty scrotum is a critical factor in the success of implantation of artificial testis. A hypoplastic scrotum increases the postoperative complication, such as wound dehiscence and prosthesis extrusion. Any technique cannot overcome this problem satisfactorily. Furthermore previous operative scars and inflammatory disease as epididymo-orchitis have often added to the difficulties. Enlarging the scrotum by gradual distention of a tissue expander implanted in the contracted scrotum has been successful in overcoming this problem. We report a case of successful artificial testes implantation after gradually enlarging scrotum by tissue expander in a 6 year old boy, who was diagnosed anorchidism with scrotal hypoplasia.