Objective Study on the reproductive toxicity of Tong Ru Dan by observing the effect on reproductive function and embryo growth for pregnant rats. Methods To adopt Tong Ru Dan in different doses and compare with different groups, we inspect weightness, appetite, amphimixis rate, pregnant rate of pregnant rats and observe alive embryo rate, abnormal embryo rate. Results The experiment results indicate that it doesn't effect on alive embryo rate, abnormal embryo rate, weightness, appetite, amphimixis rate and pregnant rate for pregnant rats. Conclusion Tong Ru ...