POI data retrieval method and association method

The invention provides a POI data retrieval method and association method. The POI data retrieval method and association method solve the shortage problem of POI data information in the prior art. The POI data retrieval method comprises the following steps of associating POI data with supplementary data to be associated; obtaining the latitude and longitude of a retrieval point; obtaining POI data in a basic retrieval area according to the latitude and longitude of the retrieval point and the latitude and longitude in the POI data; obtaining POI data in a key retrieval area and the supplementary data associated with the POI data in the key retrieval area according to the latitude and longitude of the retrieval point and the latitude and longitude in the POI data; outputting the obtained POI data and supplementary data as retrieval results. The POI data retrieval method and association method have the technical advantages that by associating the POI data with the supplementary data, the supplementary data can