Abstract: Magnesium based solid hydrogen storage materials is one of the most promising materials due to its high density, high safety, good reversibility and abundant resources, therefore, modification of magnesium based hydrogen storage materials becomes the main research direction.In order to develop a Mg-based hydrogen storage material with good hydrolysis performance, high hydrogen storage density and suitable for special scenarios, the performance of the material can be improved by adding metal alloys and catalysts.In this paper, a new kind of solid-state hydrogen storage material based on magnesium modified by ferric carbide has been developed by laboratory study. adding Ce and Ca In Mg, It can inhibit the deposition of Mg (OH)2 and promote the hydrolysis reaction through the interaction.The addition of Ce can play the role of“Hydrogen pump” and promote the hydrogen absorption reaction. The addition of In can reduce the enthalpy of reaction and adjust the kinetic properties.Using single-layer porous Fe@C as catalyst, it can play a catalytic role, reduce enthalpy change value, inhibit agglomeration, promote hydrolysis performance and so on.The preparation technology of Fe@C modified magnesium based solid-state hydrogen storage material was found by experiments. The pressure was 2.45-2.55 MPa, the temperature was 350-365℃and the hydrogen was hydrogenated for 6 hours, qualified magnesium based solid hydrogen storage materials can be prepared. The average amount of hydrolyzed hydrogen was 1651 ml/g, the hydrogen storage density was 7.34 wt.% , average particle size 116um, excellent product performance.The mg-based solid hydrogen storage materials have been transformed from laboratory grade to industrial grade.