First, the connection and difference between urology and andrology: andrology is a branch of urology, and urology includes andrology. The emergence of andrology is actually the need of discipline development. For example, at first it was internal medicine, and later it was divided into internal medicine, surgery, gynecology and pediatrics. After the operation, many operations were performed, such as thoracic surgery, brain surgery, urology and so on. Today, there is a andrology department in urology. Difference: The two have different categories in treating diseases. Urology includes three organ diseases: the first part is adrenal diseases (there are two small glands on both kidneys). The second part is the urinary system, including kidney, ureter, bladder and urethra, which is a system to promote urine excretion. The third part is the male reproductive system, including testis, that is, scrotum, testis, epididymis, vas deferens, seminal vesicle, ejaculatory duct, prostate, penis and so on. Compared with andrology, there are important differences. Urology also looks at female urinary system diseases. The so-called andrology now refers to the third of the three parts of urology-all anatomical and physiological abnormalities of male genitalia are classified as andrology. The so-called andrology is to treat or diagnose diseases of male reproductive organs, or to study the pathogenesis. Andrology is a concept of discipline subdivision derived in recent years. Specifically, urology mainly focuses on the following diseases: male and female urinary system reproductive infection, urinary calculi, urinary system tumors, urinary system inflammation, prostate diseases, sexual dysfunction, infertility, urinary system surgery (common prepuce surgery, hypospadias, varicocele, urinary incontinence, etc. ). The diseases that men are mainly concerned about are: prostate disease, sexual dysfunction, male infertility and minor surgery on reproductive organs. In short, in fact, the relationship between the two should be that andrology is incorporated into urology, which is a small branch with a short development time. Follow-up: there is a piece of red beside the testicle, and there is yellow mucus on the testicle, depending on which department. Answer: urology follow-up: how much should I bring? Answer: The best local answer in Tanghuang Hospital of Meizhou City, Guangdong Province: Then you need to bring more. If you take more, you can take the rest home.