A path switch method, comprising: in a condition that there are a source base station, an anchor base station and a target base station, after a terminal device completes a handover from the source base station to the target base station, performing, by the target base station, a path extension based on a logical direct connection interface between the target base station and the source base station, to form a target path for transmitting service data between the terminal device and a core network, wherein an anchor point of the target path is the anchor base station directly communicating with the core network in the target path ; and transmitting, by the target base station, the service data received from the terminal device to the core network through the target path, or transmitting the service data received from the core network to the terminal device through the target path , characterized in that , performing, by the target base station, the path extension based on the logical direct connection interface between the target base station and the source base station , comprises: when an extension condition is satisfied, performing, by the target base station, the path extension, wherein the extension condition comprises at least one of following conditions: a number of hops of the target base station relative to the anchor base station in the target path does not exceed a preset threshold; a time point at which the target base station performs the path extension is within a preset time period. in a condition that there are a source base station, an anchor base station and a target base station, after a terminal device completes a handover from the source base station to the target base station, performing, by the target base station, a path extension based on a logical direct connection interface between the target base station and the source base station, to form a target path for transmitting service data between the terminal device and a core network, wherein an anchor point of the target path is the anchor base station directly communicating with the core network in the target path ; and transmitting, by the target base station, the service data received from the terminal device to the core network through the target path, or transmitting the service data received from the core network to the terminal device through the target path , characterized in that , performing, by the target base station, the path extension based on the logical direct connection interface between the target base station and the source base station , comprises: when an extension condition is satisfied, performing, by the target base station, the path extension, wherein the extension condition comprises at least one of following conditions: a number of hops of the target base station relative to the anchor base station in the target path does not exceed a preset threshold; a time point at which the target base station performs the path extension is within a preset time period. a number of hops of the target base station relative to the anchor base station in the target path does not exceed a preset threshold; a time point at which the target base station performs the path extension is within a preset time period. <EOS>