It is not okay not to have a preconception checkup. Pre-conception checkups are necessary in order to have a comprehensive understanding of the physical condition of both the man and the woman, and if there are any abnormalities, they can be dealt with at an early stage to avoid the occurrence of spontaneous abortions, foetal terminations and foetal malformations. For men, semen examination should be conducted to see if the sperms are healthy and what is the viability rate; and to check if there are any diseases affecting fertility, such as cryptorchidism and other diseases in the reproductive system. For women, the fallopian tubes should be checked to see if they are clear, and gynecological tests such as routine leukorrhea and HPV should be done to rule out the presence of gynecological diseases such as vaginitis. For women with habitual abortion, chromosomes are also checked. Both men and women should be checked for any history of diseases such as hepatitis B, syphilis and AIDS. Only if all these checkups are normal, can we maximize the guarantee of having a healthy baby, so it is recommended to do preconception checkups. Couples need to pay attention to avoid contact with harmful substances during the preparation for pregnancy, strengthen the intake of nutrients, but also need to pay attention to take folic acid, can effectively prevent the occurrence of neural tube defects in the fetus. Pay attention to the combination of work and rest, maintain local hygiene.