Many parents find that their children’s urine is not normal, some urine is red, some is soy sauce color, this time parents are very worried, how can children urinate blood well? Is there something wrong with it. Has this happened to your child? If you find that your child also has abnormal urine color, don’t be anxious, we must first make a judgment to rule out pseudohematuria. First, think about whether your child is taking drugs such as aminopyrine, rifampin, phenytoin sodium, or consuming certain colors and certain food additives, which are drugs and color-containing substances whose metabolites are excreted by the kidneys to make the urine red in color. Secondly, ask your child if he or she has been strenuously active, because normal healthy children will also have transient hematuria of the naked eye after strenuous activity, and the hematuria will disappear after rest. Again, if bleeding from other areas is mixed into the urine it can also make the urine red in color, such as perianal disease or bleeding from the perineum. There is another kind called hemoglobinuria, which often occurs in malaria, hemolytic transfusion reactions or after eating fresh fava beans. Some people also have hemoglobinuria every day when they wake up, which may be paroxysmal, sleep hemoglobinuria, and all of these cases are pseudohematuria. So how do you identify true hematuria? If the child presents with visual hematuria, you should observe the color and shade of the urine, whether it contains blood clots and whether it is hematuria throughout. The urine three-cup test can help you quickly identify the source of the hematuria. Take 3 cups in one urine, the first cup to take the anterior segment of urine, the second cup to take the middle segment of urine, and the third cup to take the posterior segment of urine. If the first cup contains blood, it suggests an anterior urethral bleed, the third cup contains blood suggesting bleeding from the bladder neck and triangle or the posterior urethra, and if the whole urine is bloody to the naked eye, it indicates that the bleeding is in the bladder or above the bladder. Then we identify the color of the urine, dark red urine mostly comes from the renal parenchyma or renal pelvis; bright red or with blood clots often indicates bleeding from non-glomerular disorders, possibly urethral disease. In addition, systemic diseases can also cause blood in the urine, such as thrombocytopenic purpura and hemophilia. Once you find that your child has an abnormal urine color and you have a high suspicion of true hematuria, you must pay attention to it, first avoid strenuous activities and then go to the local hospital to consult a doctor, do not be careless and miss the diagnosis.