The urgent endoscopy of the superior gastrointestinal haemorrhage carefully and quickly helps in clarifying the following questions: Is the patient going on bleeding? Is conservative approach allowed? Must be operated? It is without danger in the hand of the experienced. In 95.20% we could get a positive evidence. In this the advantage compared with other methods is shown. The examination should possibly be done only by means of a glass fibre endoscope and may be performed only after combat against shock. It is reported on own results of 125 endoscopies in haemorrhage of the superior gastrointestinal tract.