Colorless and transparent urine may be caused by drinking more water, glomerulonephritis, uremia, polyuria stage of renal failure and other reasons. 1. Drinking too much water: under normal circumstances, normal urine is light yellow, if the patient’s urine is colorless and transparent, it may be due to the usual drinking more water resulting in dilution of urine. If there are no other symptoms, don’t worry, it is a normal physiological phenomenon. 2. Glomerulonephritis: is a relatively common kidney disease. Early in the disease, patients will appear colorless and transparent urine, but also local pain, local edema and other symptoms, severe proteinuria, hematuria and so on. 3. Uremia: it may be caused by heredity, kidney disease, etc. Patients will have symptoms such as polydipsia, polyuria, thirst, etc., and at the same time, they will also have the symptom of colorless and transparent urine. 4. Polyuria in renal failure: due to tubulointerstitial dysfunction, the kidney absorption function is reduced, resulting in polyuria. After excessive urination, the urine will be diluted to show colorless and transparent. Colorless and transparent urine may also be caused by other diseases, it is recommended that patients go to the regular medical institutions, under the guidance of professional doctors to treat the symptoms.