[en] A new method of the absolute measurement for ¹⁵²Eu was established based on the 4πβ-γ spectroscopic anti-coincidence method. It is a coincidence counting method consisting of a 4πβ-counter and a Ge(Li) γ-ray detector, in which the effective counting efficiencies of the 4πβ-counter for β-rays, conversion electrons, and Auger electrons were obtained by taking the intensity ratios for certain γ-rays between the single spectrum and the spectrum coincident with the pulses from the 4πβ-counter. First, in order to verify the method, three different methods of the absolute measurement were performed with a prepared ⁶⁰Co source to find excellent agreement among the results deduced by them. Next, the 4πβ-γ spectroscopic coincidence measurement was applied to ¹⁵²Eu sources prepared by irradiating an enriched ¹⁵¹Eu target in a reactor. The result was compared with that obtained by the γ-ray spectrometry using a ¹⁵²Eu standard source supplied by LMRI. They agreed with each other within the error of 2%. (author)