The era of the second child, the birth of a baby has become a wish of many couples, but the dream is beautiful, the reality is cruel, as the majority of couples preparing for the second child are of advanced age after 80 or 70, in many ways, often easy to meet the dilemma of wanting to have a baby but can not conceive. Some people sigh, before is the policy does not allow, now is the body does not allow, is destined to have a second child can only be thought about? What is the truth? The fertility of the couple is limited by age, both men and women, 25-30 years old is the best age to have children, the latest women should not exceed 35 years old, men should not exceed 45 years old. As the “post-80s” and “post-70s” couples of advanced age preparing for pregnancy, the second child is difficult, difficult in three places. The quality of male sperm declines Sperm quality is the cornerstone of male fertility assessment and is the root of fertility, male dead sperm, weak sperm, azoosperm, and non-liquefaction of semen are important reasons why it is difficult for senior women to get pregnant. After the age of 35, the quality of sperm will also begin to decline. Combined with poor lifestyle and increasing mental stress many senior men develop reproductive system disorders, which greatly reduces male fertility and causes the vicious consequence of difficulty in getting pregnant in women. The ovarian function of older women has significantly decreased. Advanced age is a major obstacle to women’s difficulty in conceiving. Generally speaking, women who have second children are older, and as they age, ovarian function declines significantly. As the most important reproductive organ of women, the ovaries have the important function of producing eggs and promoting the development and maturation of follicles. The stronger the ovaries are, the better the follicles will develop, which means that women are more fertile; at the same time, the dysfunction of ovarian hormone secretion can affect the ovulation mechanism, and the eggs are prone to aging as women age, all of which increase the chances of pregnancy in older women to varying degrees. The beginning of a life form begins with the meeting of the sperm and egg in the fallopian tube, therefore, women who want to have a second child must ensure the smooth flow of the fallopian tube. For various reasons, the number of caesarean sections is increasing, accounting for 60 percent of births. With the continuous innovation of medical technology, caesarean section can be completed in 10-15 minutes, but it also leaves a certain hidden danger, easily leading to women’s pelvic adhesions, so that the fallopian tube does not work, the uterus from the pelvic cavity down, thus leading to the difficulties of women to conceive again. 6 kinds of bad habits easily affect male fertility, you have not been hit? 1, addicted to smoking. The study found that smoking is one of the major causes of male infertility, the nicotine in tobacco has the effect of reducing sex hormone secretion and killing sperm. 2, alcohol abuse. Alcohol can poison the testicles and other reproductive organs, causing a decrease in serum testosterone levels, thus causing decreased libido, sperm deformities. 3, sexual life irregularities. After an ejaculation, it takes 5 to 7 days to recover the number of fertile sperm, once sex is too frequent will lead to a reduction in the number of sperm. In addition, too frequent sexual life, interrupted intercourse, excessive masturbation, etc. can lead to abnormal congestion of the sexual organs, which can induce sterile prostatitis and affect sperm formation. 4, long-term wear tight clothes library. This has three hazards: testicular temperature increases, which is not conducive to sperm production; poor perineum permeability, easy to breed bacteria and infectious diseases; impede blood circulation in the scrotal area, resulting in testicular stasis. 5, frequent hot water baths. Sperm generation and development need to be within the appropriate temperature, and frequent hot water baths will make the scrotum temperature rise, affecting sperm generation. 6, sedentary. The long time office sedentary, cycling and other habits are harmful to men, these habits will be because of the compression of the urethra, scrotum, perineum, resulting in their congestion, affecting the testes, epididymis, prostate and seminal gland function, thus affecting the generation of sperm, development, making male sperm quality decline.