胎盘是一个非常复杂的内分泌器官，除了产生甾体激素外，还能产生种类繁多的调节肽、生长因子、细胞因子，这些生物活性物质通过旁分泌和自分泌途径对胎盘自身的生长发育及功能起重要调节作用，同时还通过内分泌途径对胎儿的发育及母体的内分泌功能起重要调节作用。 Placenta is a very complex endocrine organ, in addition to producing steroid hormones, but also produce a wide range of regulatory peptides, growth factors, cytokines, these bioactive substances through the paracrine and autocrine pathways of the placental growth and development of their own Play an important regulatory role, but also through the endocrine pathway on the fetal development and maternal endocrine function play a major regulatory role.