Abstract： Objective To analysis the characteristics and optimal treatments of Gynecological malignancies in young women aged less than 30 years. Methods Retrospective analysis was performed for the clinical data of gynecological malignancies in young women aged less than 30 years who were treated in our hospital from January 2000 to December 2009, and a follow-up was made for the menstruation and fertility of the patients. Results 56 cases were identified from 721 cases of gynecological malignancies, including ovarian malignancies, choriocarcinoma malignancies, cervical cancer and uterus malignancies which were ranked in sequence.The most common ovarian malignancy was germ cell tumor. The case number of uterus malignancies was zero during the prior 5 years,and 3 during the latter 5 years. The case number of cervical cancer was 2 during the prior 5 years,and 7 during the latter 5 years. The rate of stage Ⅰ diagnosis were 76.7%, 100% ,35.7% and 66. 7%for ovarian malignancies, uterus malignancies, choriocarcinoma malignancies and cervical cancer respectively.Conservative treatments for fertility were performed for 14 cases of ovarian malignancies, 12 cases of choriocarcinoma malignancies and 1 case of cervical cancer in situ. From the successful follow-up of 10 cases of ovarian malignancies, all got near normal menstruation, total pregnancy number was 4 and 3 babies were got for 3 patients each. From the successful follow-up of 9 cases of choriocarcinoma malignancies, all got near normal menstruation, total pregnancy number was 2 and 1 baby was got. And the case of cervical cancer in situ was followed up for 1 year after coin resection without pregnancy note. Conclusion Ovarian malignancies were the most common gynecological malignancies in young women aged less than 30 years, followed by choriocarcinoma malignancies,cervical cancer and uterus malignancies. And the incidence of cervical cancer and uterus malignancies were increasing. Many kinds of conservative methods for conserving young women s ovary function and fertility function were explored and formatted in guideline.