Navigation device as well as navigation method

The invention relates to a positioning device and a positioning method. The positioning device comprises a global positioning module, a horizontal detecting module, a data base and a central processing module. The global positioning module is used for receiving satellite positioning signal, obtaining and outputting the data of the current position after decoding algorithm of the satellite positioning signal. The horizontal detecting module selectively produces and outputs inclination signal. The data base stores map data. The central processing module receives the data of the current location, map data and inclination data, and judges if the data of the current location has uneven road within a preset range on the map data when receiving the inclination signal. An uneven road notice is output when the central processing module judges the data of the current location has uneven road within the preset rant on the map data. Therefore, the positioning device of the invention can precisely distinguish even or unev