Abstract: This paper introduces the verification principle, structure composition and the technical characteristics of liquified petroleum gas (LPG) dispensers verification device based on standard meter method, analyzes and evaluates its uncertainty of measurement results.The results show that the device can completely meet specified requirements of JJG 997-2005. The LPG dispenser verification device can not only be a powerful detection means for fair trade settlement of LPG, but also be a high quality and high level for metrological verification, quality supervision, technology assessment and legal management of LPG dispensers.