Taking aeolian sand concrete as research objectthe micro-pore structuremicro-morphology and product characteristics of concrete under different aeolian sand content and different concentration of sulfate erosion were observed by nuclear magnetic resonancefield emission scanning electron microscope and energy spectrometer. The results show that with the increase of aeolian sand contentthe compressive strength of aeolian sand concrete increases first and then decreasesand the porosity decreases first and then increases. When the content of aeolian sand is 40% (mass fraction)the mechanical properties are the best. With the increase of magnesium sulfate concentration and the extension of erosion periodthe relative dynamic elastic modulus of aeolian sand concrete increases first and then decreases. When the concentration of magnesium sulfate is 3.5% and the content of aeolian sand is 40%the aeolian sand concrete still meets the standard requirements after soaking for 360 d. At this timethe porosity of aeolian sand concrete is 2.553%of which the proportion of less harmful and harmful pores reaches 63.8%and more needle-like ettringite is produced. When the concentration of magnesium sulfate is 5.0% (mass fraction)the porosity increases to 2.879%the proportion of less harmful and harmful pores decreases to 57.3%and the enrichment degree of ettringite further increases.