A method for transmitting a downlink control channel, performed by a terminal device, comprising: receiving a first downlink control information, DCI, and a second DCI, wherein, the first DCI and the second DCI are used for jointly indicating scheduling information carried by the downlink control channel, wherein the first DCI is a primary DCI and the second DCI is a secondary DCI; acquiring the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI; and wherein that the first DCI and the second DCI are used for jointly indicating scheduling information carried by the downlink control channel comprises: bits included in the first DCI and bits included in the second DCI jointly carry the scheduling information carried by the downlink control channel, wherein the acquiring the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI comprises: determining, a new DCI according to the primary DCI and the secondary DCI and acquiring the scheduling information carried by the downlink control channel according to the new DCI; wherein the determining a new DCI according to the primary DCI and the secondary DCI comprises: acquiring the new DCI according to a combination of the bits included in the first DCI and the bits included in the second DCI, wherein ordering of information bits in the new DCI is the same as ordering of information bits in a downlink control signaling format of the primary DCI. receiving a first downlink control information, DCI, and a second DCI, wherein, the first DCI and the second DCI are used for jointly indicating scheduling information carried by the downlink control channel, wherein the first DCI is a primary DCI and the second DCI is a secondary DCI; acquiring the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI; and wherein that the first DCI and the second DCI are used for jointly indicating scheduling information carried by the downlink control channel comprises: bits included in the first DCI and bits included in the second DCI jointly carry the scheduling information carried by the downlink control channel, wherein the acquiring the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI comprises: determining, a new DCI according to the primary DCI and the secondary DCI and acquiring the scheduling information carried by the downlink control channel according to the new DCI; wherein the determining a new DCI according to the primary DCI and the secondary DCI comprises: acquiring the new DCI according to a combination of the bits included in the first DCI and the bits included in the second DCI, wherein ordering of information bits in the new DCI is the same as ordering of information bits in a downlink control signaling format of the primary DCI. bits included in the first DCI and bits included in the second DCI jointly carry the scheduling information carried by the downlink control channel, wherein the acquiring the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI comprises: determining, a new DCI according to the primary DCI and the secondary DCI and acquiring the scheduling information carried by the downlink control channel according to the new DCI; wherein the determining a new DCI according to the primary DCI and the secondary DCI comprises: acquiring the new DCI according to a combination of the bits included in the first DCI and the bits included in the second DCI, wherein ordering of information bits in the new DCI is the same as ordering of information bits in a downlink control signaling format of the primary DCI. determining, a new DCI according to the primary DCI and the secondary DCI and acquiring the scheduling information carried by the downlink control channel according to the new DCI; wherein the determining a new DCI according to the primary DCI and the secondary DCI comprises: acquiring the new DCI according to a combination of the bits included in the first DCI and the bits included in the second DCI, wherein ordering of information bits in the new DCI is the same as ordering of information bits in a downlink control signaling format of the primary DCI.