Urinary occult blood 1+ is defined as positive urinary occult blood with a small number of red blood cells in the urine. Usually there are physiological and pathological reasons for 1+ urinary occult blood. 1. Physiological causes: generally caused by strenuous exercise, fever, female menstruation, etc., usually do not need treatment, when the situation improves the symptoms of urinary occult blood will disappear, but also can be done further ultrasound examination to clarify the cause. 2. Pathological causes: generally caused by urinary tract infections, but do not rule out other causes, such as nephritis, stones and so on. Urinary tract infection caused by urinary occult blood 1 +, need to carry out antibiotic anti-infection treatment; all kinds of nephritis caused by urinary occult blood 1 +, need to use hormones such as prednisone or immunosuppressant such as tacrolimus and other treatments; urinary stones caused by urinary occult blood 1 +, and there are also the symptoms of lumbago, the need to carry out extracorporeal lithotripsy treatment. Specific need to follow the doctor’s advice according to the different causes of treatment. It is recommended that the patient pay attention to drink more water in daily life, eat a light diet, avoid eating too much spicy stimulation or greasy food, and it is also recommended to go to the hospital to find out the cause of the disease and follow the doctor’s instructions, so as to avoid delaying the condition.