The color of urine in the morning is like black tea, which is related to urine concentration, urinary tract infection, urinary stones and urinary tract tumor. 1. Concentration of urine: for some people, less water before going to bed, sweat loss and other causes of excessive concentration of urine at night, may appear in the morning urine color like black tea phenomenon. Usually not accompanied by other symptoms, and occasionally the color of urine like red tea. 2. Urinary system infections: acute and chronic glomerulonephritis, pyelonephritis, cystitis and so on. The reason why urinary tract infections can cause some patients to urinate in the morning like red tea, mainly with the pathogenic bacteria on the local mucous membrane caused by irritation or damage to a certain relationship, patients are also prone to frequent urination, urinary urgency, urinary pain and other symptoms. 3. urinary stones: common kidney stones, bladder stones, ureteral stones, urethral stones and so on. When the body stone damage to local tissues, it will cause hematuria, which is manifested in the morning urine color like black tea. Patients with urinary stones are also prone to lumbar pain, nausea and vomiting, painful urination and other symptoms. 4. Tumor of urinary system: common clinical diseases include bladder cancer, prostate cancer, kidney cancer, ureteral tumor and so on. Patients with urinary system tumor may ooze blood due to invasion of tissues, resulting in morning urine color like black tea. It is recommended that people whose morning urine color is like red tea should consult a doctor for examination, so as to achieve early detection, early diagnosis and early treatment, thus reducing the impact on the health of the organism.