Abstract: Thirty cases of sex cord tumor with annlar tubules of the ovary (scscTAT) were reviewed, of these 28 were collected from the chinese literature 2 from the author's cinic. Age of the patients ranged mom 6 to 59 years, with a mean of 22 year. the main clmical manifestations were estrogenic hormonal imbalance(irrcgular mcnstruation,postmenopousal bleeding and sexual precocity) and abdominal mass. one of them is also companied with peutz-Jegher syndrome. Microscopic exmination showed single or complex annulartubules with prominent basement membrane—like material aroud the tubules. SCTAT should be carefally differentiated from Granulose cell tumor, Gynandroblas toma and Sertoli cell adnoma.the malignant potential of this tumor had been compacted tumors in trabculae or sheet as well as mitosis.