Panorama field geological image is an important form of displaying field geology information with high resolution． Taking an example for Xingcheng，the authors studied the use of panorama field geological images based on the Flex for rich client display technology，application of Google maps API for Flash，and discussed construction method for field geological panoramic information system which created the rich client Internet application program． The results indicate that using Google maps API to mark position and route of panoramic image collection point can be fully integrated field geological information and map information． It can provide visual field geological information for users． This program is characterized by quick execution speed，strong interaction and rich function，which promotes the users' experience effectively．