Most of spatial data sharing platforms at present are still based on traditional geographic metadata mode，mostly in the format of simple text or brief figure; On the other hand

with the popularization of internet

integrating and visualization sharing of multi-source spatial data unified on internet are urgently required. On the basis of problems fore-mentioned

firstly

in this paper we analyzed the requirement of integrating and visualization sharing of multi-source spatial data. Then，aiming at the characteristics of coastal zone multi-source spatial data

we discussed the methods of integrating coastal zone multi-source spatial data unified on internet

the interactive querying of vector and raster graphics

and downloading multi-source spatial data visually. Finally

we took “Taiwan Strait area multi-source spatial data integration sharing system” as a case study

introduced the detailed realization process of integration and information services of multi-source spatial data in coastal zone based on ArcIMS. It shows that the technologies for the integrating and visualization sharing of multi-source spatial data in coastal zone provided in this paper

can satisfy users sharing requirement on internet in a way of “What you see

what you get”.