Yellowish reddish urine can be caused by food and drug factors, kidney disease, liver and gallbladder disease, urinary tract infection and other factors. 1. Food and drug factors: If the urine appears yellowish and reddish, you should consider whether you have recently taken drugs such as levofloxacin mesylate or foods such as red dragon fruit, which may lead to yellowish and reddish urine. 2. Kidney disease: renal tuberculosis, kidney stones, pyelonephritis or primary thrombocytopenic purpura and other diseases, can lead to an increase in the amount of blood in the urine, which in turn appears in the urine yellow and red. 3. Hepatobiliary diseases: Hepatocellular jaundice and other hepatobiliary diseases can occur when bilirubin is elevated in the body, which can lead to changes in the color of the urine, accompanied by pain in the liver area and liver dysfunction and other manifestations. 4. Urinary tract infection: when urinary tract infection occurs, bacteria multiply in the urinary system, which can lead to the destruction of the epithelial mucosa of the urinary tract by invasion, resulting in increased blood content in the urine, which in turn leads to the appearance of yellowing and reddish urine. When the urine is yellow and red, you should consult a doctor in time, under the guidance of a specialist to actively carry out the appropriate treatment, which will help to alleviate the discomfort symptoms as soon as possible.