Simulated Mars soil and preparation method thereof

The invention relates to the technical field of spaceflight scientific research, in particular to simulated Mars soil and a preparation method thereof, and aims to solve the problem that most of current simulated fire soil can only simulate the properties of one aspect of real fire soil and cannot be highly similar to the real fire soil in multiple aspects. According to the preparation method of the simulated Mars soil, the simulated fire soil is subjected to chemical component testing, the components are adjusted until the chemical component data of the simulated fire soil is consistent with the chemical component data of the real fire soil, then the simulated fire soil is subjected to near infrared spectrum testing and chemical component testing, and the simulated fire soil is obtained by adjusting the components. And finally, carrying out compactness adjustment on the simulated fire soil prepared according to the final formula so as to obtain the simulated fire soil with relatively high reduction degree on