In the STD clinic, the main manifestation of penile and scrotal edema is commonly seen in patients who come to the clinic is on the rise, due to the edema occurs in the genitals, patients often have a heavy psychological burden, and improper treatment may lead to reproductive deformities, so it is important to recognize the etiology of the basis of the correct treatment is of great significance. If you find edema of the penis and scrotum, you should go to the hospital at the first time for systematic examination and treatment. Examination: 1. Detailed medical history. 2, physical examination: in a darker place, shine a flashlight on the enlarged scrotum, if it is clear it will be translucent, indicating that it is a scrotal hydrops, if it is not translucent, it may be a hernia or testicular tumor, which needs further diagnosis. 3, there is a history of non-marital sexual contact or suspected sexually transmitted diseases: take urethral secretion smear and culture to check gonococcus, fungi, culture to check Mycoplasma urealyticum (UU), Mycoplasma hominis (MH), rapid immunoassay to check Chlamydia trachomatis (CT), and at the same time, take the blood to do rapid plasma reactive protein test (RPR) and Syphilis spiracle hemocytophores blood balloon agglutination test (TPHA), the edematous parts of the ulcerated secretions take the secretions for Bacterial culture plus drug sensitivity. 4, penile ultrasonography: (1) longitudinal section of the urethra is a thin line-like lower level echoes, located in the urethral spongy body. (2) The longitudinal section of the corpus cavernosum is a neatly bounded strip-like structure, and the interior is a moderate level of homogeneous point-like echoes. The longitudinal axis of the deep penile artery shows parallel thin lines of high echogenicity, which are most clearly visible during erection.