Seamless indoor and outdoor positioning switching method

A seamless indoor and outdoor positioning switching method comprises the steps as follows: I, a perception layer L1 is used for detecting scene changes and changes in needs of users, and reporting to a switching module; 2, an algorithm layer L2 reports the current algorithm to the switching module; 3, the algorithm layer L2 gives a notice to a hardware layer L3 to open a hardware module; 4, a data layer L4 feeds new measured positioning data back to the L2 to judge whether a candidate positioning algorithm can be used or not, if yes, the candidate positioning algorithm is reported to the switching module, and if the algorithm after switching cannot be used for positioning yet, another predetermined candidate positioning algorithm is selected again until the algorithm after switching can be used; 5, when the switching module continuously receives the instruction that the current algorithm cannot be used and receives the instruction that the candidate positioning algorithm can be used during a window time period, the L2 is notified to perform algorithm switching, and meanwhile, the MEMS positioning technology is closed, and the candidate positioning algorithm is used for positioning; 6, after switching of the L2 is completed, the L3 is notified to close unnecessary hardware modules. According to the invention, the terminal electric quantity can be saved, and maintenance and standardization are facilitated.