Red tea-colored urine is considered to be related to acute glomerulonephritis, renal tuberculosis, ureteral stones, renal cancer and so on. 1. Acute glomerulonephritis: the disease is mainly caused by β-hemolytic streptococcal infection. Typical symptoms of patients are hematuria, proteinuria, edema, elevated blood pressure, etc. Some patients may show red tea-colored urine. 2. Renal tuberculosis: mainly due to infection with tuberculosis bacillus, the disease will cause patients to appear frequent urination, urinary urgency, painful urination, hematuria, lumbar pain, night sweats (abnormal sweating after sleeping, waking up sweating stops) and other symptoms, can also be manifested as red tea-colored urine. 3. Ureteral stones: some patients with ureteral stones may have hematuria due to stone damage to the local mucosa, which can be manifested as red tea-colored urine. Ureteral stones are related to metabolic abnormality and urinary tract obstruction, etc. Typical symptoms of patients include lumbar and back cramps, frequent urination, urgency and painful urination. 4. Kidney cancer: Kidney cancer is a malignant tumor, the cause of which is still unclear, but it is considered to be related to heredity, long-term smoking and other factors. Kidney cancer can cause some patients to have red-tea colored urine, and it is easy to be accompanied by other uncomfortable symptoms such as waist pain, abdominal mass and so on. There are many reasons causing red-tea colored urine, such as strenuous exercise, medication, systemic lupus erythematosus, urinary system trauma, polycystic kidney and so on. It is recommended that patients seek medical examination to clarify the cause of the disease and then follow the doctor’s instructions for treatment.