The pink color of urine may be related to diseases such as urinary tract stones, urinary tract infections, urinary tract tuberculosis, urinary tract tumors and other factors such as diet and medications. 1. Urinary tract stones: when the stones move in the body and cause damage to the kidney parenchyma, ureteral wall and bladder wall, it will cause a small amount of bleeding, in which case it will appear as pink urine visible to the naked eye. 2. Urinary tract infection: inflammatory factors continue to cause damage to the mucous membrane can be manifested as mucosal congestion and edema, and in severe cases, exudative bleeding may even occur, and the blood will be discharged through the urine will be manifested as pink urine. 3. Urinary tract tuberculosis: it is caused by infection of tuberculosis bacillus, the typical symptoms are frequent urination, urinary urgency, hematuria, and systemic symptoms such as weight loss, low-grade fever, fatigue or anemia. 4. Tumor of urinary tract: due to the rupture and bleeding of the tumor itself as well as the damage caused by tumor cells to the surrounding tissues, it can be manifested as flesh-colored or pink urine in the clinic. 5. Dietary factors: taking certain fruits or foods containing pigment can lead to pink urine, such as red dragon fruit. 6. Drugs: Some drugs can cause red urine after taking, such as rifampicin capsules. As the cause of the disease is more complex, the specific situation needs to ask the doctor for a face-to-face consultation.