Abstract: In the study,the relation between oviposition quantity of flat-chest turtle and individual body length,body breadth,body weight was determined,and the exploration on artificial proliferation,cultivation and its reasonable utilization was emphasized.The result showed that with the increase of individual body length,body breadth and body weight,oviposition quantity of flat-chest turtle also increase starting from sexual maturity in the natural multiplication,when individual body length,body breadth and body weight was（25.20±0.26） cm,（17.70±0.33） cm and（1631±27） g respectively,the oviposition quantity attained the expected,however these indexes increase further,the oviposition quantity fall back with lower format.