The embodiment of the invention provides a cell switching method and device in a high-speed mobile environment. The method comprises the steps of sending a measurement configuration request according to a preset request sending rule and receiving a measurement report fed back by a receiving device located at a mobile side, wherein the measurement report comprises mobile side speed and a mobile side stable operation state identifier and a receiving device is the device accessing the current base station; judging whether the following condition is satisfied or not according to the measurement report, wherein the condition is that the mobile side stable operation state identifier displays that the mobile side is in a stable operation state and the receiving device is located on a cell edge of a cell accessing the current base station; if timing is started, obtaining the operation distance of the mobile side according to timing time and the mobile side speed; when the operation distance is greater than or equal to the cell coverage distance of the current base station, sending a switching request to a target base station; and receiving switching request confirmation sent by the target base station and sending a connection reconfiguration message to the receiving device. Through application of the embodiment of the invention, the cell switching efficiency is improved.