The present invention discloses an c automatic location system and method. The system comprises a location unit which is established on a public network to generate a dynamic location webpage; an arrangement unit configured to receive the website of a dynamic location webpage sent from the location unit and obtain the geographic position itself based on the dynamic location webpage; and a control unit configured to calculate whether the geographic position of the arrangement unit is matched with a preset position or not, wherein the arrangement unit arranges a collection device in the condition that the geographic position is not matched with the preset position and stores the geographic position information of the arranged collection device. The system calls the location function of the arrangement unit through the dynamic location webpage to realize accurate location of the collection device in the earthquake collection process.