A normal sperm morphology of 4% does not require treatment, but it does require attention. According to the WHO Laboratory Manual for the Examination and Processing of Human Semen (5th edition), “In vitro fertilization (IVF), intrauterine insemination (IUI), and natural conception studies have indeed found that the reference limit or threshold for normal morphology of spermatozoa is only 3% to 5%”. Normal morphology of spermatozoa in the range of 3% to 5% can lead to normal fertilization. In order to improve the morphology rate of sperm and reduce the deformity rate, you can pay attention to the following aspects in your daily life: try to wear loose pants, keep the perineum clean and comfortable; participate in more exercise, less go to the sauna such as the temperature of the whole body and testicles rise; especially pay attention to quit smoking and alcohol. It is recommended to maintain good living habits and go to the hospital for regular checkups. If you find that the normal morphology rate of spermatozoa starts to be lower than 4%, you should consult a doctor in time, so as not to be negligent to avoid delaying your condition.