A reference signal transmission method, comprising: sending, by a network node, configuration information of multiple reference signals to a terminal device, wherein the configuration information of the multiple reference signals comprises a resource unit type; sending, by the network node, the multiple reference signals on a plurality of sub-resource units of a resource unit, and the resource unit type indicates whether the multiple reference signals on the plurality of sub-resource units of the resource unit have a same reference signal characteristic; and receiving, by the network node from the terminal device, measurement information related to part of the plurality of sub-resource units; wherein when the resource unit type indicates that the multiple reference signals on the plurality of sub-resource units of the resource unit have a same reference signal characteristic, the measurement information related to the part of the plurality of sub-resource units comprises a measurement value of one or more reference signals of the multiple reference signals, wherein the one or more reference signals are corresponding to the part of the plurality of sub-resource units; and when the resource unit type indicates that the multiple reference signals on the plurality of sub-resource units of the resource unit have different reference signal characteristics, the measurement information related to the part of the plurality of sub-resource units comprises an index of the part of the plurality of sub-resource units and a measurement value of one or more reference signals of the multiple reference signals, wherein the one or more reference signals are corresponding to the part of the plurality of sub-resource units. sending, by a network node, configuration information of multiple reference signals to a terminal device, wherein the configuration information of the multiple reference signals comprises a resource unit type; sending, by the network node, the multiple reference signals on a plurality of sub-resource units of a resource unit, and the resource unit type indicates whether the multiple reference signals on the plurality of sub-resource units of the resource unit have a same reference signal characteristic; and receiving, by the network node from the terminal device, measurement information related to part of the plurality of sub-resource units; wherein when the resource unit type indicates that the multiple reference signals on the plurality of sub-resource units of the resource unit have a same reference signal characteristic, the measurement information related to the part of the plurality of sub-resource units comprises a measurement value of one or more reference signals of the multiple reference signals, wherein the one or more reference signals are corresponding to the part of the plurality of sub-resource units; and when the resource unit type indicates that the multiple reference signals on the plurality of sub-resource units of the resource unit have different reference signal characteristics, the measurement information related to the part of the plurality of sub-resource units comprises an index of the part of the plurality of sub-resource units and a measurement value of one or more reference signals of the multiple reference signals, wherein the one or more reference signals are corresponding to the part of the plurality of sub-resource units.