A handover control method, comprising: sending, by a first network-side device, a first handover request to a second network-side device, wherein the first network-side device is applied to a first network, and the second network-side device is applied to a second network, and a terminal is attached to the first network, and the first handover request contains first terminal information of the terminal, and the first terminal information is used by the second network-side device to configure a resource prepared for handover to the second network for the terminal when determining that the first terminal information meets a predetermined condition for initiating a handover operation; after the first network-side device sends the first handover request to the second network-side device, the method further comprises: receiving, by the first network-side device, a handover preparation confirmation message sent by the second network-side device, and sending a measurement configuration for handover to the second network to the terminal, characterized in that the measurement configuration for handover is used by the terminal to measure a network channel condition of the second network to obtain a first measurement result, and to send a handover confirmation message to the second network-side device when detecting that the first measurement result meets a first measurement event, wherein the handover confirmation message is used for instructing the second network-side device to complete a handover operation of the terminal based on the resource prepared for handover; wherein after the first network-side device receives the handover preparation confirmation message sent by the second network-side device, the method further comprises: receiving, by the first network-side device, a resource release message sent by the second network-side device for releasing a resource prepared for handover to the second network, wherein the resource release message is sent by the second network-side device when the second network-side device obtains second terminal information of the terminal and determines that the second terminal information meets a predetermined condition for releasing the resource prepared for handover. sending, by a first network-side device, a first handover request to a second network-side device, wherein the first network-side device is applied to a first network, and the second network-side device is applied to a second network, and a terminal is attached to the first network, and the first handover request contains first terminal information of the terminal, and the first terminal information is used by the second network-side device to configure a resource prepared for handover to the second network for the terminal when determining that the first terminal information meets a predetermined condition for initiating a handover operation; after the first network-side device sends the first handover request to the second network-side device, the method further comprises: receiving, by the first network-side device, a handover preparation confirmation message sent by the second network-side device, and sending a measurement configuration for handover to the second network to the terminal, characterized in that the measurement configuration for handover is used by the terminal to measure a network channel condition of the second network to obtain a first measurement result, and to send a handover confirmation message to the second network-side device when detecting that the first measurement result meets a first measurement event, wherein the handover confirmation message is used for instructing the second network-side device to complete a handover operation of the terminal based on the resource prepared for handover; receiving, by the first network-side device, a handover preparation confirmation message sent by the second network-side device, and sending a measurement configuration for handover to the second network to the terminal, characterized in that the measurement configuration for handover is used by the terminal to measure a network channel condition of the second network to obtain a first measurement result, and to send a handover confirmation message to the second network-side device when detecting that the first measurement result meets a first measurement event, wherein the handover confirmation message is used for instructing the second network-side device to complete a handover operation of the terminal based on the resource prepared for handover; wherein after the first network-side device receives the handover preparation confirmation message sent by the second network-side device, the method further comprises: receiving, by the first network-side device, a resource release message sent by the second network-side device for releasing a resource prepared for handover to the second network, wherein the resource release message is sent by the second network-side device when the second network-side device obtains second terminal information of the terminal and determines that the second terminal information meets a predetermined condition for releasing the resource prepared for handover.