Many couples who are eager to have children, may be due to the problem of knowledge of sexual life, often do not know how to coordinate the number of sex with the relationship between fertility, some couples choose frequent intercourse, to try to increase the chances of pregnancy, they may choose to have sex every day near the ovulation period of women, or even multiple times in a day; while some other couples believe that they should “hold They may choose to have sex every day near the woman’s ovulation period, or even multiple times in one day, while other couples believe that they should “hold back” for a period of time to get their “sperm” ready, and therefore choose to have intercourse for a longer period of time, such as once every 1-2 weeks, or even longer intervals. Whether these two options are active or passive, and the fact that these two extreme cases are very difficult to let them as they wish. Ms. Luo from Shandong asked in her consultation letter, “Hi, my husband and I have been preparing for a baby since the beginning of this year, but nothing has happened until now. Except for the fact that our sex life has been relatively infrequent because of our busy work schedule, we are both very healthy. Is the low frequency of sex the main cause of infertility?” People who suffer from infertility usually have more significant occupational characteristics, such as often leaving early and returning late due to work, irregular rest and diet, high tension at work, and no sexual life for a long time. Such work and life habits can lead to a decrease in the number and survival rate of sperm. And because the sperm metabolism slows down, it will also lead to sperm aging, sperm vitality and quality are greatly reduced, so it is difficult to conceive. If the sex life is not regular because of socializing, it will also affect the secretion of many hormones in the male body, such as androgens, which will also lead to a decrease in the quality and quantity of sperm. In addition, the lack of regular intercourse will increase the probability of vaginal infections in women, and their local functions such as vaginal and pelvic muscles are difficult to exercise, which is also an important reason why it is difficult to produce love crystals. Therefore, too little sex is also a reason why couples find it difficult to have children.