Hydroxychloroquine may have an effect on the fetus when taken by a pregnant woman and can cause ototoxicity and retinopathy, although not absolutely, the drug should be used with caution during pregnancy. Hydroxychloroquine is used in the treatment of rheumatoid arthritis, discoid and systemic lupus erythematosus, and this drug should be used with caution by women during pregnancy. After using hydroxychloroquine in pregnant women it may enter into the fetal bloodstream through the placental barrier, fetal growth and development will be affected, which may lead to ototoxicity, retinopathy, corneal changes, which is not conducive to the normal growth and development of the fetus. Pregnant women should not take hydroxychloroquine blindly, the benefits of treatment far outweigh the risks, if you must use the drug, need to be comprehensive assessment, under the guidance of a doctor with hydroxychloroquine.