The 230Ra has been produced via 232Th-2p reaction induced by 60 MeV/u 18O ion irradiation of natural thorium. The radium was radiochemically separated from the mixture of thorium andreaction products. Thin Ra sources in which 230Ac was got through 230Ra→230Ac were prepared for observing fission fragments from β-delayed fission of 230Ac. The sources were exposed to the mica fission track detectors and measured by the HPGe y detector. The precursor 230Ac was identified by means of observed two fission events as well as y spectra, and the β-delayed fission probability of 230Ac was obtained to be (1.19±0.85)× 10-8. The 230Ra has been produced via 232Th-2p reaction induced by 60 MeV / u 18O ion irradiation of natural thorium. The radium was radiochemically separated from the mixture of thorium and reaction products. Thin Ra sources in which 230Ac was got through 230Ra → 230Ac were prepared The sources were exposed to the mica fission track detectors and measured by the HPGe y detector. The precursor 230Ac was identified by means of observed two fission events as well as y spectra, and the β-delayed fission probability of 230Ac was obtained to be (1.19 ± 0.85) × 10-8.