Disclosed are a signal transmission method and apparatus, and same are used for realizing reference signal (RS) transmission of adaptive UE-specific RS resource configuration on the basis of a quality indication of a positioning measurement value. The signal transmission method provided in the present application includes receiving a UE-specific reference signal (RS) by means of a terminal-level UE-specific reference signal resource, and the UE-specific reference signal resource is determined by a network side on the basis of a quality indication, determined by a terminal, of a positioning measurement value and determining and reporting positioning information on the basis of measurement of the UE-specific RS.