Etiology and mechanism dlgestontracthemorhage: pepc ulcer, cancer, Overabundance ancylostomiasis, vances LOSS acute gastritis, hemorrhoids T hemonhage] recurent rhinorrhagia excessremensesEtiology and mechanism digestion tract hemorrhage：peptic ulcer ，cancer， Overabundance ancylostomiasis ，varices， Loss acute gastritis，hemorrhoids ( hemorrhage ) recurrent rhinorrhagia excessive menses