Urethritis is an infection of the urethra by various pathogens, which will cause an increase in abnormal secretions, the main components of which include pathogens, leukocytes, red blood cells, and exfoliated cells. 1. pathogen: urethritis secretion will have the appearance of infectious agents, through the culture can be found in the specific types of pathogens, including bacteria, mycoplasma and mycobacteria and so on. 2. Leukocytes: localized inflammation will have a purulent reaction, which further leads to the appearance of a large number of leukocytes. 3. Erythrocytes: With the inflammatory stimulus will lead to mucosal damage, causing small capillary rupture leading to the appearance of red blood cells. 4. Shedding cells: inflammation leads to damage to the epithelium of the urinary tract, causing epithelial cells to be discharged along with secretions. Urethral inflammation accompanied by obvious urinary abnormalities, increased secretions, the need for timely medical observation, diagnosis of the cause of the cause of the standardized treatment under the guidance of the clinician, to avoid delays in the condition.