The Fifth Plenary Session of the 18th Party Central Committee resolved to “fully implement the policy that a couple can have two children”, and the issue of the second child has since changed from “to give birth or not to give birth” to “to give birth or not to give birth”. “The new “can you have” problem has reappeared in front of people, especially the stupid post-70s couples, leaving them little time to fix the reproduction. The time is running out for them to have another baby. How can we have a healthy baby? What are the issues that men who are eager to achieve “fatherhood” again need to pay attention to? The fact that you have had one child does not mean that you can have a second child. Secondary infertility is also very common in the clinic, so it is best to go to a regular hospital to do some pre-fertility tests before you prepare for pregnancy: 1. Semen analysis: through the analysis of sperm count, activity rate, viability, morphology, etc., to make a preliminary evaluation of male fertility. It should be noted that semen is not ejaculated for 3-7 days before the semen test, so that the test is accurate enough. 2, mycoplasma, chlamydia check: regardless of sperm quality, it is necessary to check the mycoplasma chlamydia, these two microorganisms are very common in the south, the infection has a great impact on sperm quality, sperm-egg binding, fertilized egg implantation, embryo development, if the sperm quantity is low, poor quality, it is essential to check. 3, varicose veins: in men have a high incidence, will increase with age year by year aggravation, when young because the degree of varicose veins light or good physical fitness can tolerate and other reasons can be reproductive, with the increase in the severity of varicose and physical fitness after the age of the decline in the quality of sperm quantity. If the sperm quality is poor and/or the quantity is low, it is necessary to clarify the diagnosis, and if it is serious, it is best to treat it with surgery as soon as possible, and after the surgery, combined with the application of Chinese herbal medicines to tonify the kidneys and produce sperm, fertility can be restored quickly. The other genetic diseases such as thalassemia, infectious diseases such as hepatitis B, hepatitis C, syphilis and AIDS can also be examined at the same time. Second, pay attention to lifestyle habits to improve sperm quality With the deterioration of the environment, the accelerated pace of life, unhealthy lifestyle and many other factors have a great impact on sperm, so good lifestyle habits are also very important: 1. The sperm is affected by nicotine, coal tar, heavy metals, etc., and people who are addicted to alcohol and tobacco want babies, need to try to restrain; 2, no hot springs, no sauna, wear loose clothing, avoid sedentary: sperm production needs to be carried out in an environment below the normal body temperature of 2 to 3 degrees Celsius, the scrotum temperature is too high to be careful of the sperm “heat death”; 3, diligent In addition relaxation and adequate sleep are equally important. 5, avoid exposure to toxic chemicals and radiation, X-rays, chemotherapy drugs, pesticides, insecticides, paints, formaldehyde, welding, heavy metals (such as aluminum, lead, cadmium, mercury, etc.) may cause a decrease in the quantity and quality of sperm, an increase in the rate of malformation and DNA fragmentation, which can seriously damage male fertility. Therefore, before preparing for pregnancy, it is better for the female partner to go to the gynecology department for some corresponding examinations, such as sex hormone level, endometrial condition, exclusion of some reproductive system infections, especially mycoplasma and chlamydia; eugenics four tests (rubella virus, cytomegalovirus, toxoplasmosis and herpes simplex virus); monitoring follicle development and ovulation; The test for tubal patency, etc.; in order to prepare for pregnancy with early management and treatment.