The present invention provides a recombinant attenuated respiratory syncytial virus (RSV) comprising i) a nucleic acid encoding an F protein of a stabilized pre-fusion respiratory syncytial virus (RSV) or its analogue, variant, or fragment; or ii) a nucleic acid encoding a G protein of vesicular stomatitis Indiana virus (VSV) or its analogue, variant, or fragment, and provides a genome of the recombinant RSV, and a recombinant vector comprising the genome. The recombinant attenuated RSV can be provided as a live vaccine strain which is safe and has excellent stability while maintaining infectiousness.