Urine routine occult blood in the morning and afternoon results are not the same is usually a normal phenomenon, but menstrual blood, strenuous exercise, etc. may also affect the urine routine results, the phenomenon of morning and evening is not the same. Urine routine occult blood that detects the number of red blood cells in the urine, generally normal, urine red blood cells with slide method average 0 ~ 3 / HPF (high magnification vision). It is generally believed that the specimen collection time can affect the results of the examination, in addition, red blood cells belong to the formed components of urine, the first urine after waking up in the early morning, the concentration of its formed components and chemical composition is higher, the examination of red blood cells in urine is of the greatest value, urine collected in the afternoon may be measured with the results of red blood cells in the morning there are differences in the results, which is a normal phenomenon. In addition, menstrual blood, strenuous exercise may appear urinary occult blood, may also lead to morning and morning urine routine occult blood inconsistency. Urine occult blood people should go to the regular hospital in time, under the guidance of professional physicians to clarify the cause, timely treatment.