The present disclosure relates to a method, apparatus, medium, and device for positioning. When a predetermined switching condition is satisfied, a positioning result obtained by using a different positioning algorithm based on positioning data collected by a further selected sensor to position a movable object can be used as the positioning result of the movable object. When a autonomous driving vehicle leaves an area with high satellite signal quality and enters an area with low satellite signal quality, a positioning result of the vehicle obtained based on positioning data collected by a further selected sensor, which is different from a GPS receiver, can be used as the positioning result of the vehicle. In this way, when positioning the vehicle, the GPS positioning data with low positioning accuracy can be directly discarded, thereby effectively improving the accuracy of vehicle positioning.