A method for antenna alignment, comprising: Receiving, in a receiving direction of a first antenna, an electromagnetic wave signal transmitted by a second antenna; determining a strength value of the electromagnetic wave signal; converting the strength value into a display value within a predetermined range; and displaying the display value, so that a user determines, according to the display value, whether the first antenna is aligned with the second antenna characterized in that the method further comprises: when determining that a first power supply module of a communication device instead of a second power supply module of the communication device supplies power to the communication device comprising the first antenna, wherein a power supply voltage of the first power supply module is lower than a power supply voltage of the second power supply module of the communication device, only enabling a receiving function of the communication device among the receiving function and a transmitting function of the communication device, and the receiving the electromagnetic wave signal transmitted by the second antenna comprises: receiving, through the receiving function of the communication device, the electromagnetic wave signal transmitted by the second antenna. Receiving, in a receiving direction of a first antenna, an electromagnetic wave signal transmitted by a second antenna; determining a strength value of the electromagnetic wave signal; converting the strength value into a display value within a predetermined range; and displaying the display value, so that a user determines, according to the display value, whether the first antenna is aligned with the second antenna characterized in that the method further comprises: when determining that a first power supply module of a communication device instead of a second power supply module of the communication device supplies power to the communication device comprising the first antenna, wherein a power supply voltage of the first power supply module is lower than a power supply voltage of the second power supply module of the communication device, only enabling a receiving function of the communication device among the receiving function and a transmitting function of the communication device, and the receiving the electromagnetic wave signal transmitted by the second antenna comprises: receiving, through the receiving function of the communication device, the electromagnetic wave signal transmitted by the second antenna. when determining that a first power supply module of a communication device instead of a second power supply module of the communication device supplies power to the communication device comprising the first antenna, wherein a power supply voltage of the first power supply module is lower than a power supply voltage of the second power supply module of the communication device, only enabling a receiving function of the communication device among the receiving function and a transmitting function of the communication device, and the receiving the electromagnetic wave signal transmitted by the second antenna comprises: receiving, through the receiving function of the communication device, the electromagnetic wave signal transmitted by the second antenna. receiving, through the receiving function of the communication device, the electromagnetic wave signal transmitted by the second antenna.