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The reaction of aluminum water to produce hydrogen is prevented by an alumina film. To prepare a kind of aluminum alloy with instant hydrogen production and high hydrogen yield, this paper investigates the effect of different Ga content and In–Sn ratio on the hydrogen production performance of aluminum alloy, and also observes the effect of hydrogen production at different temperatures. The composition, structure, and thermal properties are observed by Scanning Electron Microscope, X-ray diffraction, and differential scanning calorimetry. With different ratios of In and Sn, they appear as two intermetallic compounds, In 3 Sn and InSn 4. When Ga, In, and Sn were added to aluminum together, the hydrolytic properties of the Al-Ga-In-Sn alloys are greatly improved. The paper finally prepared an aluminum alloy with a hydrogen conversion rate of more than 98% and activation energy of 39.2 kJ/mol. Further the development and utilization of hydrogen energy are promoted. [Display omitted] • A high hydrogen yielding aluminum alloy prepared by melting was proposed. • The hydrolysis rate is proportional to the reaction temperature. • Effect of Ga content and In–Sn ratio on hydrogen production performance. • Effect of low melting point elements on the activation energy of aluminum alloys. • The activation energy of Al-3%Ga-5.25%In-1.75%Sn is 39.2 kJ/mol. [ABSTRACT FROM AUTHOR]