No discharge from the urethra may also be chlamydia, mycoplasma infection, due to the different physical condition of the individual, the severity of the disease is different, so the performance of the symptoms of the infection will also be different. The majority of the population in the chlamydia and mycoplasma infection, will lead to urethritis, the urethra will have a little secretion, and there will also be frequent urination, urinary urgency and other manifestations. A very small number of people infected with mycoplasma and chlamydia can not be accurately determined because of the relatively small amount of discharge, but usually accompanied by urinary urgency, urethral tingling, and urinary frequency and other manifestations, can be further diagnosed by means of secretion examination. Part of the population is asymptomatically infected, only carrying the pathogen positive, but without any manifestation of symptoms. The absence of urethral secretions may also be the presence of chlamydia and mycoplasma infections, just because the disease is relatively mild, so the symptoms are not particularly obvious, the presence of the above symptoms, it is recommended that further diagnosis and treatment.