A group global positioning system includes a plurality of positioning signal processing devices with a global positioning function and a plurality of radio signal processing devices corresponding to the positioning signal processing devices. With one of the corresponding radio signal processing devices, one of the positioning signal processing devices outputs analog global positioning information to the remaining ones of the positioning signal processing devices which then performs analog-to-digital conversion on the analog global positioning information and recovers digital global positioning information, thus allowing the remaining ones of the positioning signal processing devices to execute the global positioning function and display related information. The present invention discloses a grouping technique for simultaneously displaying on the positioning signal processing devices the digital global positioning information thereof.