An information transmission method, comprising determining, by a first communication node, a sending mode corresponding to a control channel resource; determining, by the first communication node, a set of second time units corresponding to the control channel resource according to a correspondence between the control channel resource and second time units; sending, by the first communication node, downlink control information in the control channel resource by using the sending mode corresponding to the control channel resource to a second communication node within the set of second time units of a downlink control domain of a first time unit, wherein each control channel resource in the first time unit corresponds to multiple of the second time units of the first time unit; and preforming, by the first communication node, transmission of data with the second communication node according to the downlink control information, wherein the data is at least one of downlink data and uplink data; the first time unit comprises the downlink control domain and a data domain, and there is a preset length of resources between a start position of the first time unit and a start position of the downlink control domain; wherein the downlink control domain comprises N second time units, each of the second time units comprising N c,sym symbols; and the data domain comprises M third time units, each of the third time units comprising N d,sym symbols, wherein N, M, N c,sym and N d,sym are all positive integers; wherein a correspondence between the control channel resource and the sending mode, and the correspondence between the control channel resource and the second time units are preset at the first communication node and the second communication node; wherein the sending mode is a sending beam and a sending port used by the first communication node. determining, by the first communication node, a set of second time units corresponding to the control channel resource according to a correspondence between the control channel resource and second time units; sending, by the first communication node, downlink control information in the control channel resource by using the sending mode corresponding to the control channel resource to a second communication node within the set of second time units of a downlink control domain of a first time unit, wherein each control channel resource in the first time unit corresponds to multiple of the second time units of the first time unit; and preforming, by the first communication node, transmission of data with the second communication node according to the downlink control information, wherein the data is at least one of downlink data and uplink data; the first time unit comprises the downlink control domain and a data domain, and there is a preset length of resources between a start position of the first time unit and a start position of the downlink control domain; wherein the downlink control domain comprises N second time units, each of the second time units comprising N c,sym symbols; and the data domain comprises M third time units, each of the third time units comprising N d,sym symbols, wherein N, M, N c,sym and N d,sym are all positive integers; wherein a correspondence between the control channel resource and the sending mode, and the correspondence between the control channel resource and the second time units are preset at the first communication node and the second communication node; wherein the sending mode is a sending beam and a sending port used by the first communication node.