The common causes of urine bleeding are as follows: 1, neoplastic urethral orifice, such as male urethral orifice warts, older women’s urethral meatus; 2, acute urinary tract infection, such as acute cystitis or acute pyelonephritis, patients can have frequent urination, urinary urgency, painful urination, meatus hematuria, may be accompanied by lumbago as well as fever; 3, painless meatus hematuria, that is, the patient does not have other special other than hematuria This may be a typical manifestation of urological tumor, which must be examined by urological ultrasound and CT; 4, urinary stones, mainly ureteral stones and urethral stones, which can cause more severe pain in the lower abdomen and urethra; 5, systemic diseases, such as hematologic diseases and immune system diseases, can lead to hematuria; 6, there are some other There are some other rare diseases that need to be further investigated in the hospital.