When getting a fresh semen report, people often become dizzy due to the dazzling parameters, especially when they see that the normal sperm form is only a few percent, and they panic, worrying that it will affect the growth and development of the next generation. According to the latest WHO 5th edition reference values for routine semen analysis, normal semen indicators should meet: semen volume ≥ 1.5ml; pH ≥ 7.2; sperm concentration ≥ 15×106/ml; total sperm count ≥ 39×106/1 ejaculation; sperm forward motion percentage ≥ 32%; normal morphology rate ≥ 4%; sperm survival rate ≥ 58%; and white blood cells < 1×106/ml. Therefore, as long as the sperm normal morphology rate is greater than or equal to 1×106/ml, the sperm normal morphology rate should be higher than or equal to 1×106/ml. As long as the normal morphology rate of sperm is greater than or equal to 4%, it can be considered as normal morphology of sperm. Clinically, the morphology of sperm is a relatively minor indicator to evaluate the quality of semen. A high sperm deformity rate is only a morphological abnormality of sperm, and does not mean that the sperm carry abnormal chromosomes, nor does it mean that the rate of fetal abnormality at birth will increase, nor will it necessarily cause miscarriage. There are many reasons for the increase of sperm malformation rate, including genitourinary infection, mumps-induced orchitis, epididymal tuberculosis, varicocele, etc.; external reasons include the influence of certain hormones or chemical drugs, sperm mutation caused by radiation exposure, long-term high temperature in the scrotum, long-term smoking and alcohol abuse, etc. In order to reduce the sperm deformation rate, men preparing for pregnancy should pay attention to good habits in daily life, quit smoking and drinking, stay away from radiation and various harmful chemicals, try not to be sedentary and take sauna, do not wear tight underwear for a long time, strengthen exercise, eat a balanced diet, and eat more food containing zinc, selenium and other trace elements and vitamin-rich foods to improve sperm quality.