Use ionospheric delay correction parameter, and a terminal device

The present invention provides a method of using the ionospheric delay correction parameter, and a terminal device, wherein, the method comprising: obtaining a plurality of terminal ionospheric delay correction parameter set; the terminal delay correction parameter selected from a plurality of focus ionosphere applied to the terminal region is located ionospheric delay correction parameter set to correct for ionospheric delays. The present invention solves the related art low positioning precision delay correction parameter causes problems due to the use of the same and the ionospheric model global ionosphere, thereby improving the positioning accuracy.