Abstract: The female reproductive system of adult Apriona germari (Hope) feeding on various trees isdissected. The results confirm that the ovary development is directly related to complemental nutrition. The ovaries of adults raised with white mulberry or paper mulberry can normally grow and continually produce mature ova.The ovarian tubes of the adults feeding on aspen or apple trees are gradually shrielled,which can not produce mature ova, so the eggs stored in egg-calyces will not lay out.