Abstract: Specail geographycal position has very important academic significance and great practical value.The theory and methods of this application research is a weak and new problem,which is well worth discussing.1.On certain position research：Because of the mathematical base of map and its suitability on complex position study,specail geographical position research can be based on conventional maps.Key problems：（1）new model of choice on projection;（2）new model of grade process on chart.2.On tourism influence range research：The following five principles of certain area are worked out after removing identity and ensuring independence.（1） mathemetical;（2）concentration of resource distribution;（3）similarity of the natural environment;（4）close connection between society and economy;（5）systematic.3.On regional features of tourism influence range：Type system of tourism location is the basic theory of the research.Its main content includes four types of attribute（natural,cultural,traffic,market）,or three types of measurement（big,middle,small）,or three types of development（resource, market,mixture）.

Key words: Special geographical position, Tour influence range, Type system of tourism location