The invention relates to the technical field of off-line navigation, and particularly discloses an off-line navigation method and
system based on
satellite images, and the method comprises the steps: obtaining the position of a user side in real
time based on a position sharing authority, and constructing an activity portrait of the user side according to the obtained position; for any user side, the updating priority of each position is determined according to the activity portrait, a position table is determined according to the updating priority, position information is acquired based on the position table, and a
local map is updated; generating navigation information according to the
local map; the updating priorities of different positions are determined according to the activity information of the user side, and the
local map is updated based on the updating priorities under the condition that the network is poor, so that the
utilization rate of network resources is improved, the navigation service can be carried out in an offline state, and the service range of the navigation service is expanded.