A method for sending a measurement report, includes: after receiving an enable signal of a second network, a first modem starting up a timer and sending a startup signal to a second modem; when the timer expires, the first modem sending a tracking area update (TAU) request to a network side device; the first modem receiving a measurement configuration sent by the network-side device, and instructing the second modem after startup to measure the second network according to the measurement configuration to obtain a measurement report; and reporting the measurement report to the network-side device.