Abstract
In this paper, we used the basis of nano-topological space to find out more causes of gastrointestinal diseases, Data were collected for patients suffering from diges-tive problems in the Gastroenterology Department of Tripoli Medical Center in Tripoli, State of Libya (Table 1) and Here we applyed the nano topology in con-junction with clinical studies to find the key factors of digestive problems using topological reduction of attributes in incomplete information system, the table in this paper gives information about patients "diabetes, blood pressure, drinking Coffee or Smoking, Playing sports and Heart" these factors have been studied and were placed in the form of nanogroups in a nanotopological space, the purpose of this study is to know how to avoidance of pathogens of the system digestive system to reduce the incidence of this disease, by using approximate voids in na-no-topological space