Abstract：In order to promote the development of spatial information science and improve the research of GIS theory,analysis of the current situation of spatial data uncertainty is processed. Throughout the domestic and foreign research results of the relevant literature,it can be known that spatial data random uncertainty is mainly elaborated and concluded from its basic theory and kinds; spatial data fuzziness is mainly studied from three aspects,such as the fuzzy nature and the resource,the representation and the processing method of spatial data. It is pointed that the problem and research direction of spatial data uncertainty that are the further improvement of the basic theory of stochastic uncertainty,attribute uncertainty research,fuzziness of positional and attribute uncertainty.

Keyword：positional uncertainty;random uncertainty;fuzziness;attribute uncertainty;