Chen, female, 30 years old, has no history of smoking and drinking, has been infertile, early miscarriage, and the miscarriage has been tested by the hospital before, and there is no abnormality. Then the doctor told her that if she was pregnant normally, she should pay attention to her lifestyle and avoid exposure to toxic and harmful substances. However, the woman still had recurrent abortion. After our screening of environmental factors, it was found that the heavy metal exceeded the standard. It turned out that the long-term use of whitening products and cosmetics in daily life led to the excessive heavy metal mercury. After stopping using whitening products and cosmetics, strengthen physical exercise to improve metabolism, prepare for pregnancy for half a year, and finally get pregnant smoothly.