A locating method in a multi-connectivity network, comprising: locating, by a terminal device, through a first radio access technology, RAT; and sending, by the terminal device, a locating message of the terminal device to a location management function entity over an air interface through signaling of a second RAT, wherein the locating message of the terminal device comprises: a first plurality of locating parameters of a cell of a plurality of cells of a first node, the first node corresponding to the first RAT; and a second plurality of locating parameters of another cell of another plurality of cells of a second node, the second node corresponding to the second RAT; wherein the first node is a secondary node providing a service for the terminal device in the multi-connectivity network; wherein the second node is a primary node providing a service to the terminal device in the multi-connectivity network; wherein the first RAT is Long Term Evolution, LTE, and the second RAT is New Radio, NR; wherein the sending, by the terminal device, of the locating message of the terminal device to the location management function entity over an air interface through signaling of the second RAT further comprises: sending, by the terminal device, the locating message of the terminal device to the location management function entity though a radio resource control, RRC, layer of the primary node; and wherein the locating message is configured to enable the location management function entity to determine a location of the terminal device, and the plurality of locating parameters comprises at least a time difference of arrival, TDoA and a cell identifier, cell ID. locating, by a terminal device, through a first radio access technology, RAT; and sending, by the terminal device, a locating message of the terminal device to a location management function entity over an air interface through signaling of a second RAT, wherein the locating message of the terminal device comprises: a first plurality of locating parameters of a cell of a plurality of cells of a first node, the first node corresponding to the first RAT; and a second plurality of locating parameters of another cell of another plurality of cells of a second node, the second node corresponding to the second RAT; wherein the first node is a secondary node providing a service for the terminal device in the multi-connectivity network; wherein the second node is a primary node providing a service to the terminal device in the multi-connectivity network; wherein the first RAT is Long Term Evolution, LTE, and the second RAT is New Radio, NR; wherein the sending, by the terminal device, of the locating message of the terminal device to the location management function entity over an air interface through signaling of the second RAT further comprises: sending, by the terminal device, the locating message of the terminal device to the location management function entity though a radio resource control, RRC, layer of the primary node; and wherein the locating message is configured to enable the location management function entity to determine a location of the terminal device, and the plurality of locating parameters comprises at least a time difference of arrival, TDoA and a cell identifier, cell ID. a first plurality of locating parameters of a cell of a plurality of cells of a first node, the first node corresponding to the first RAT; and a second plurality of locating parameters of another cell of another plurality of cells of a second node, the second node corresponding to the second RAT; wherein the first node is a secondary node providing a service for the terminal device in the multi-connectivity network; wherein the second node is a primary node providing a service to the terminal device in the multi-connectivity network; wherein the first RAT is Long Term Evolution, LTE, and the second RAT is New Radio, NR; wherein the sending, by the terminal device, of the locating message of the terminal device to the location management function entity over an air interface through signaling of the second RAT further comprises: sending, by the terminal device, the locating message of the terminal device to the location management function entity though a radio resource control, RRC, layer of the primary node; and wherein the locating message is configured to enable the location management function entity to determine a location of the terminal device, and the plurality of locating parameters comprises at least a time difference of arrival, TDoA and a cell identifier, cell ID. sending, by the terminal device, the locating message of the terminal device to the location management function entity though a radio resource control, RRC, layer of the primary node; and wherein the locating message is configured to enable the location management function entity to determine a location of the terminal device, and the plurality of locating parameters comprises at least a time difference of arrival, TDoA and a cell identifier, cell ID.