A method of transmitting information in an unlicensed band, applied to a node, comprising: listening to a channel of the unlicensed band with a reception beam of the node to obtain a channel listening result, when information needs to be transmitted with a transmission beam; and transmitting the information on the channel with the transmission beam, in a case that the channel listening result indicates that the channel is in an idle state; wherein in a case that a first transmission beam and a first reception beam of the node meet a condition of beam correspondence, the step of, listening to the channel of the unlicensed band with the reception beam of the node to obtain the channel listening result, when the information needs to be transmitted with the transmission beam, comprises: listening to the channel of the unlicensed band with the first reception beam corresponding to the first transmission beam to obtain the channel listening result, when the information needs to be transmitted with the first transmission beam, and the step of listening to the channel of the unlicensed band with the first reception beam corresponding to the first transmission beam to obtain the channel listening result comprises: performing beamforming on the first reception beam corresponding to the first transmission beam to obtain y reception sub-beams, where y is an integer larger than 1; and listening to the channel of the unlicensed band with at least a part of the y reception sub-beams to obtain the channel listening result, wherein the performing beamforming on the first reception beam corresponding to the first transmission beam to obtain the y reception sub-beams comprises: dividing the first reception beam in its direction range into y narrow beams; or, wherein in a case that no transmission beam and no reception beam of the node meet a condition of beam correspondence, the step of, listening to the channel of the unlicensed band with the reception beam of the node to obtain the channel listening result, when the information needs to be transmitted with the transmission beam, comprises: listening to the channel of the unlicensed band with at least a part of Y reception beams of the node to obtain the channel listening result, when the information needs to be transmitted with at least one transmission beam, wherein the node has Y reception beams and Y is an integer larger than 1. listening to a channel of the unlicensed band with a reception beam of the node to obtain a channel listening result, when information needs to be transmitted with a transmission beam; and transmitting the information on the channel with the transmission beam, in a case that the channel listening result indicates that the channel is in an idle state; wherein in a case that a first transmission beam and a first reception beam of the node meet a condition of beam correspondence, the step of, listening to the channel of the unlicensed band with the reception beam of the node to obtain the channel listening result, when the information needs to be transmitted with the transmission beam, comprises: listening to the channel of the unlicensed band with the first reception beam corresponding to the first transmission beam to obtain the channel listening result, when the information needs to be transmitted with the first transmission beam, and the step of listening to the channel of the unlicensed band with the first reception beam corresponding to the first transmission beam to obtain the channel listening result comprises: performing beamforming on the first reception beam corresponding to the first transmission beam to obtain y reception sub-beams, where y is an integer larger than 1; and listening to the channel of the unlicensed band with at least a part of the y reception sub-beams to obtain the channel listening result, wherein the performing beamforming on the first reception beam corresponding to the first transmission beam to obtain the y reception sub-beams comprises: dividing the first reception beam in its direction range into y narrow beams; or, listening to the channel of the unlicensed band with the first reception beam corresponding to the first transmission beam to obtain the channel listening result, when the information needs to be transmitted with the first transmission beam, and the step of listening to the channel of the unlicensed band with the first reception beam corresponding to the first transmission beam to obtain the channel listening result comprises: performing beamforming on the first reception beam corresponding to the first transmission beam to obtain y reception sub-beams, where y is an integer larger than 1; and listening to the channel of the unlicensed band with at least a part of the y reception sub-beams to obtain the channel listening result, wherein the performing beamforming on the first reception beam corresponding to the first transmission beam to obtain the y reception sub-beams comprises: dividing the first reception beam in its direction range into y narrow beams; or, wherein in a case that no transmission beam and no reception beam of the node meet a condition of beam correspondence, the step of, listening to the channel of the unlicensed band with the reception beam of the node to obtain the channel listening result, when the information needs to be transmitted with the transmission beam, comprises: listening to the channel of the unlicensed band with at least a part of Y reception beams of the node to obtain the channel listening result, when the information needs to be transmitted with at least one transmission beam, wherein the node has Y reception beams and Y is an integer larger than 1.