Sperm normal morphology rate of 3.8%, as long as you can screen out normal high quality sperm is possible to do IVF. Normal sperm morphology is roughly head slightly oblate, tadpole-shaped, overall clear, whip-like tail, sperm normal morphology rate is generally 85% to 90%, sperm normal morphology rate of 3.8% belongs to a seriously low situation, the success rate of natural pregnancy is relatively low. At this time, you can carry out a routine semen examination to check whether the liquefaction degree and mobility of semen are normal. If there is normal morphology and healthy sperm, the sperm can be selected through sperm centrifugation for in vitro fertilization to form embryos and then embryo transfer, i.e. IVF, so it is necessary to do a good job of pre-pregnancy examination before pregnancy.