A method for dynamically adjusting transmit power in a communication system comprising at least a control device, a first system having a receiver and a second system having a transmitter, the method comprising steps executed by the control device: acquiring strength of a signal received by the receiver of a first system; characterized in that: determining whether the acquired strength of the signal received by the receiver of the first system is less than a sensitivity of the receiver of the first system corresponding to strength of a signal currently transmitted by the transmitter, according to correspondence information between signals transmitted by the transmitter and sensitivities of the receiver of the first system, and the strength of the signal currently transmitted by the transmitter; if yes, decreasing the strength of the signal currently transmitted by the transmitter to be equal to or less than strength of a signal transmitted by the transmitter corresponding to a sensitivity of the receiver of the first system which is regarded as the strength of the received signal; and increasing the strength of the signal currently transmitted by the transmitter to be equal to the strength of the signal transmitted by the transmitter corresponding to the sensitivity of the receiver of the first system which is regarded as the strength of the received signal, when it is determined that the acquired strength of the signal received by the receiver of the first system is greater than the sensitivity of the receiver of the first system corresponding to the strength of the signal currently transmitted by the transmitter. acquiring strength of a signal received by the receiver of a first system; characterized in that: determining whether the acquired strength of the signal received by the receiver of the first system is less than a sensitivity of the receiver of the first system corresponding to strength of a signal currently transmitted by the transmitter, according to correspondence information between signals transmitted by the transmitter and sensitivities of the receiver of the first system, and the strength of the signal currently transmitted by the transmitter; if yes, decreasing the strength of the signal currently transmitted by the transmitter to be equal to or less than strength of a signal transmitted by the transmitter corresponding to a sensitivity of the receiver of the first system which is regarded as the strength of the received signal; and increasing the strength of the signal currently transmitted by the transmitter to be equal to the strength of the signal transmitted by the transmitter corresponding to the sensitivity of the receiver of the first system which is regarded as the strength of the received signal, when it is determined that the acquired strength of the signal received by the receiver of the first system is greater than the sensitivity of the receiver of the first system corresponding to the strength of the signal currently transmitted by the transmitter. determining whether the acquired strength of the signal received by the receiver of the first system is less than a sensitivity of the receiver of the first system corresponding to strength of a signal currently transmitted by the transmitter, according to correspondence information between signals transmitted by the transmitter and sensitivities of the receiver of the first system, and the strength of the signal currently transmitted by the transmitter; if yes, decreasing the strength of the signal currently transmitted by the transmitter to be equal to or less than strength of a signal transmitted by the transmitter corresponding to a sensitivity of the receiver of the first system which is regarded as the strength of the received signal; and increasing the strength of the signal currently transmitted by the transmitter to be equal to the strength of the signal transmitted by the transmitter corresponding to the sensitivity of the receiver of the first system which is regarded as the strength of the received signal, when it is determined that the acquired strength of the signal received by the receiver of the first system is greater than the sensitivity of the receiver of the first system corresponding to the strength of the signal currently transmitted by the transmitter.