Stomach syphilis (syphilis of stomach) is caused by the invasion of Treponema pallidum into the gastric wall and is a rare gastric disease. It is mainly because syphilis is mainly infected through sexual contact in adults. Clinically, it is divided into three stages, in addition to invasions of the skin and mucous membranes, it can also affect internal organs, and is a relatively serious sexually transmitted disease. It is mainly transmitted through sexual contact, but can also be transmitted indirectly through blood transfusions, surgery, even clothing, etc.