The Tumor is Embryo of the Organization ———“The Organization Gamete ”Fusion of Tumor formation hypothesis Yuan ZHeng-ping (1) Yang Ding-qiao (2) The Chinese Railway Constructs the First Construction Bureau Hua Xian Central Hospital Orthopedics Abstract: The occurrence of tumor is a biological problem. From the point of view of biological evolution, tumor is animal kingdom has degradation of androgyny reproductive mode in human body reflect, belongs to the low sexual reproduction, the tumor is low human embryo is a kind of organization embryo. From the point of view of cells to carry on the analysis, the somatic cell by meiosis of haploid cells, can be named "The organization gamete", in the human body chromosome have differences between the two "The organization gamete" phase fusion produce tumor cells，the tumor cell growth growth forms the tumor . The tumor is organization's embryo. Key words:  tumor.  occurring mechanism .  biological evolution。 sexual  reproduction .hermaphrodite 。haploid cell.   (1) Doctor in charge; The Chinese railway constructs the first construction bureau Hua Xian central hospital orthopedics (rtirement) .  SHanxi  Weinan Huaxian     714100 yuan.zhp@163.com (2)Thelibrarians.;  Xi'an  Jiaotong  university  medical  school  library   Shanxi  Xi`an   710061