At this book, stomach cancer has been analyzed in various aspects such as: The clinical aspect where the symptoms of the disease are listed as pain, vomiting, anorexia, weight loss, diarrhea, abdominal mass with its characteristics., gastrointestinal hemorrhage. Various diagnostic methods have been reviewed, such as: fibrogastroscopy, contrast radiography, biopsy, abdominal echo. They have been illustrated with visual materials such as photographs, films taken from the activity of the clinic. Tumor staging was reviewed based more on operative findings and qualitative anatomopathological evaluation. The book deals with the therapeutic aspect by looking at the types of interventions performed in clinic. The complications of these interventions have also been examined. Thanks go to my Parents and to my Family!Henri and Hera drive us forward in field of scientific research.Family love is the greatest blessing of life.