Andrology mainly studies the diagnosis and treatment of male reproductive system diseases, such as male infertility, sexual dysfunction, prostate diseases, psychosexual diseases, male reproductive endocrine diseases, abnormal male reproductive development and so on. Therefore, the diseases seen by andrology mainly include male sexual physiological and psychological diseases, male fertility and family planning, and male reproductive system diseases.

1. Male psychophysiological diseases: erectile dysfunction, premature ejaculation, non-ejaculation, nocturnal emission, ejaculation disorder, hyposexuality, excessive masturbation, retrograde ejaculation, hematuria and hematuria, sexual sensory disturbance, hypersexuality, sexual hypofunction, syncope, impotence, sexual boredom, male hypofunction syndrome caused by liver cirrhosis, etc.

2. Male fertility and family planning: abnormal infertility of vas deferens, varicocele, abnormal infertility of accessory glands, asthenospermia, hemospermia, abnormal sperm, non-liquefaction of sperm, testicular dysplasia, dead sperm, multiple testicles, testicular torsion, testicular injury, testicular tumor, etc.

3, male reproductive system diseases: chronic prostatitis, prostatic hyperplasia, prostate cancer, gonorrhea, condyloma acuminatum, syphilis, balanitis, cystitis, genital herpes, orchitis, phimosis prepuce, too long prepuce, hydrocele of tunica vaginalis, varicocele, penile plastic surgery, etc.