A data sending method performed by a wireless terminal, comprising: before a connection to a wireless network side is established, detecting whether the wireless terminal has data to be sent to the wireless network side, wherein the data to be sent comprises signaling data; if a result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has no data to be sent, turning off a power amplifier PA of the wireless terminal; if the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has data to be sent, turning on the PA of the wireless terminal; wherein the step of detecting whether the wireless terminal has data to be sent to the wireless network side comprises: detecting, by a baseband chip of the wireless terminal, whether at least one radio frame exists in a first memory that is in the wireless terminal and is connected to the baseband chip of the wireless terminal; wherein the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has no data to be sent comprises that no radio frame exists in the first memory; and the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has data to be sent comprises that at least one radio frame exists in the first memory, and the at least one radio frame is stored in the first memory after being received by the baseband chip from an application processor AP of the wireless terminal. before a connection to a wireless network side is established, detecting whether the wireless terminal has data to be sent to the wireless network side, wherein the data to be sent comprises signaling data; if a result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has no data to be sent, turning off a power amplifier PA of the wireless terminal; if the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has data to be sent, turning on the PA of the wireless terminal; wherein the step of detecting whether the wireless terminal has data to be sent to the wireless network side comprises: detecting, by a baseband chip of the wireless terminal, whether at least one radio frame exists in a first memory that is in the wireless terminal and is connected to the baseband chip of the wireless terminal; wherein the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has no data to be sent comprises that no radio frame exists in the first memory; and the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has data to be sent comprises that at least one radio frame exists in the first memory, and the at least one radio frame is stored in the first memory after being received by the baseband chip from an application processor AP of the wireless terminal. detecting, by a baseband chip of the wireless terminal, whether at least one radio frame exists in a first memory that is in the wireless terminal and is connected to the baseband chip of the wireless terminal; wherein the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has no data to be sent comprises that no radio frame exists in the first memory; and the result of detecting whether the wireless terminal has data to be sent to the wireless network side is that the wireless terminal has data to be sent comprises that at least one radio frame exists in the first memory, and the at least one radio frame is stored in the first memory after being received by the baseband chip from an application processor AP of the wireless terminal.