Diagnostic classification of male infertility I. Classification according to the results of semen examination (a) Immune infertility (positive sperm encapsulating antibodies) MAR mixed antiglobulin test or immunobead test ≥50% of motile spermatozoa are encapsulated with antibodies. (ii) Normal semen (normal spermatozoa and normal seminal plasma are diagnostic of unexplained infertility) (iii) Abnormal seminal plasma (iv) Abnormal spermatocytosis Spermatozoa with normal head morphology <30%. (v) Weak spermatidosis Sperm density ≥20×106/ml with <25% grade A motile spermatozoa and <50% A+B (vi) Oligospermia Sperm density <20×106/ml. (vii) Azoospermia Presence of seminal plasma without spermatozoa. (viii) Azoospermia Diagnostic classification of male infertility etiology recommended by the World Health Organization (WHO) According to the WHO male infertility diagnostic procedure chart, the diagnosis of male infertility etiology can be divided into 16 categories. Sexual dysfunction includes impotence, too frequent or too little sexual intercourse, non-ejaculation, premature ejaculation and retrograde ejaculation. 2, according to the sperm and seminal plasma to determine the diagnosis (1) male immunity infertility. (2) Unexplained infertility (3) Simple seminal plasma abnormality. 3. Classification of male infertility causes with definite etiology: (1) Medical factors (2) Systemic causes (3) Congenital abnormalities (4) Acquired testicular damage (5) Varicocele. (6) male accessory gland infection infertility (7) endocrine causes 4, other not find out the cause but only semen examination abnormalities, such as: (1) idiopathic oligozoospermia (2) idiopathic weak spermatozoa (3) idiopathic deformed spermatozoa (4) obstructive azoospermia (5) idiopathic azoospermia What are the common sexual dysfunctions? Common sexual dysfunctions include: impotence, premature ejaculation, failure to ejaculate, retrograde ejaculation and so on. What are the testicular diseases that cause male infertility? 1.Congenital testicular hypoplasia syndrome, or small testicle syndrome. 2. Cryptorchidism 3. Orchitis How to collect semen? 1.Abstinence for 3-7 days before semen examination. 2, masturbation method of semen collection, can not use a condom or interrupt sexual intercourse to retain semen, so as not to have an impact on the test results. All specimens should be collected as far as possible and should not be omitted. 3. If the semen is collected outside the hospital, it must be kept warm during the delivery process. Remarks: Before the test, you should avoid colds, fever and other symptoms, and take the test when you are well rested and in good physical condition. Can azoospermia patients have children? Azoospermia patients cannot have children under natural circumstances. According to whether the testicles have spermatogenic function, azoospermia is divided into obstructive azoospermia and non-obstructive azoospermia. Obstructive azoospermia is possible to have children through single-sperm intracytoplasmic fibrosis (ICPF) injection with a small amount of sperms taken from the epididymis or testis by epididymal puncture or testicular biopsy technique. Non-obstructive azoospermia can be treated with donor insemination. What are the preventive measures for male infertility? 1, try not to use or use less of all kinds of chemicals, away from pesticides, paints, benzene, formaldehyde, toxic minerals, exhaust fumes and so on. 2.Prevent all kinds of infectious diseases that jeopardize male fertility, such as mumps and sexually transmitted diseases. 3.Find the testicles have different changes from usual, such as enlargement, hardening, unevenness, pain, etc., must be timely diagnosis and treatment. 4.Quit smoking and drinking, stay away from radiation, don't wear tight pants, don't soak in hot springs and sauna.