Among infertile couples, 30% of them have male causes, such as azoospermia, oligospermia, weak spermatozoa and so on. When traced, these problems that plague male fertility may not occur only after adulthood, it is very likely that in childhood and adolescence has left a “hidden problem”. Therefore, experts remind parents to pay attention to the boy’s growth and development process, to pay more attention to its “sensitive parts”. Mumps Hurt Sperm Danger Index: ★★★★★ Ignore Reason: Mumps virus attack testicles, causing testicular swelling pain, but 10 days or so, testicular swelling and healing, at this time the patient thought healed, but in fact, the mumps virus on the testicular tissue damage has occurred. Mumps is an epidemic in the winter and spring seasons. According to the relevant data statistics, in the men’s infertility patients, there are about 14% is caused by testicular failure, most of them are caused by mumps complication testicular inflammation. Dr. Du Peng of the male department of the Guangdong Provincial Maternal and Child Health Hospital JI Ai Reproductive Center said that in the clinic, often encounter infertile patients, tracing their medical history, found that in their childhood and adolescence suffered from mumps. Mumps is an acute respiratory infectious disease that mainly affects children aged 5-15 years old. The mumps virus not only has a special affinity for the parotid gland, but also likes to invade the meninges and testes. When mumps is complicated by orchitis, there is a high fever, swelling and pain in the testicles. Due to the toxic effect of the virus, the testicular tissue is damaged, especially after the destruction of the varicocele, which is specialized in sperm production, there is no ability to produce sperm. Therefore, parents of children with mumps should not ignore it. Cryptorchidism Hurts sperm Danger Index: ★★★★ Reason for ignoring: The testicles of boys within 1 year old appear sometimes, and parents don’t care too much about it. The scrotum is a very “smart” organ that expands when it gets hot to dissipate heat and shrinks when it gets cold to keep warm, all for the purpose of protecting the testicles and facilitating the production and survival of sperms. However, in some children, the testicles are retained in the abdominal cavity, leading to infertility in adult men. According to statistics, about 10% of baby boys are born with testicles that have not fully descended from the abdominal cavity into the scrotum, after which the testicles gradually descend into the scrotum, although about 2% of boys also continue to have abnormally positioned testicles at the age of 1 year. The biggest danger of cryptorchidism is the damage to the spermatogenic cells, as the temperature in the abdominal cavity is about 40°C, and the primitive spermatogenic cells are damaged in the hot environment. In infertile men, it has been found that the testicles of patients with cryptorchidism are small and soft in texture, and the sperm count is low and poorly energized. According to experts, treatment is usually required by the age of one week if it is found that the child’s testicles have not yet descended into the scrotum. Varicocele Injury to sperm Danger Index: ★★★★★ Reason for Ignoring: In the early stages of the disease, there is no obvious discomfort. About 15-20% of adult male infertility patients present with varicose veins of the spermatic cord, and the patient has a visible plexus of blood vessels on the back of the scrotum. Varicocele can appear as early as childhood or adolescent development. A survey conducted by some scholars on adolescent students who came to outpatient clinics or hospitalized for male diseases showed that 87 cases of varicocele were found in 1020 adolescents, accounting for 8.5%. “In the early stages of varicocele, there is no obvious discomfort, plus adolescents are often ashamed to ask their parents about lesions of the external genitalia, so they are found in adulthood when they have scrotal swelling and discomfort, poor appearance or infertility visits. Varicocele can affect venous blood return to the scrotum, causing a slowing of local toxin metabolism, which reduces semen quality and ultimately leads to infertility.” Crohn’s Disease Sperm Injury Danger Index: ★★★★ Reason for Ignoring: The public’s aesthetics have changed, and white, clean, pretty boys are favored by girls, thus ignoring the “man’s true nature”. A Wei from the age of 20 years old found that his testicles are smaller than his peers, and in the past five years, testicular atrophy is serious, but also appeared impotence, soft but not firm, can only barely and his girlfriend in the same room. What makes him even more anxious is that his breasts are getting bigger and bigger, his beard is growing slowly, the knot in his throat is less obvious, his voice is not as thick as before, and his appearance is becoming more and more like a woman. In fact, this symptom is Crohn’s Disease, which is a kind of sex chromosome abnormality disease. Before puberty is generally no obvious symptoms, after pubertal development, the symptoms gradually obvious, pubic hair, beard sparse, throat knot is not obvious, nearly half of the patients with breast development of female-type breasts, patients with low libido, sexual function is poor, most of the patients with azoospermia and can not bear children. Therefore, boys in pubertal development, parents should observe whether the “male” characteristics, such as beard, throat knot, voice change, etc., if the boy’s skin is becoming more and more white, more and more feminine appearance, then we should be vigilant, as soon as possible to seek medical attention.