Positive Mycoplasma deiureticum does not usually cause urinary protein. Positive for Mycoplasma deiuria indicates a Mycoplasma deiuria infection, suggesting the presence of Mycoplasma in the genitourinary tract. Positive Mycoplasma urealyticum is common in non-gonorrheal urethritis, vaginitis, and pelvic inflammatory disease. In the case of normal immune function does not cause genitourinary infections. There are many reasons for the production of urinary protein, physiological factors are: fever proteinuria, exercise proteinuria, hematochezia proteinuria, cold or high temperature proteinuria, postural proteinuria and so on. Pathologic factors are seen in various primary or secondary glomerular diseases, nephrotic syndrome, urinary tract infectious diseases, tubulointerstitial nephritis, congenital renal tubular diseases, and so on. Therefore, positive Mycoplasma Urealyticum does not usually cause urinary protein. If the patient is not feeling well, he/she should consult the doctor for examination and early treatment.