Disclosed in the embodiments of the present application are a reference signal and message transmission method, and a transmission resource determination method and device. When a first device needs to transmit a reference signal, the first device may determine transmission resource information related to a transmission resource for transmitting the reference signal from within a time slot according to time domain resource parameters of the reference signal, wherein the transmission resource information may comprise the symbol position of the transmission resource in the time slot and/or an airspace resource on the symbol in the transmission resource. Compared to the traditional mode of a reference signal being transmitted only by means of a fixed position, a transmission resource for transmitting a reference signal may be dynamically determined according to the time domain resource parameters of the reference signal, thereby reducing the possibility of conflict between the transmission of the reference signal and the transmission of other messages. Furthermore, a transmission resource for the reference signal may also be determined. When a first resource and a second resource haveoverlapping parts in a time domain, the first device may only transmit part of the reference signal or may not transmit the reference signal, thereby improving the transmission performance of the first device.