To improve the quality of magnesia fluxed pellets by adjusting SiO₂ content, MgO content and basicity, the effect on the properties of magnesia fluxed pellets was analyzed by orthogonal design experiment. The results showed that within the 6 changing factors, the compressive strength following descending order are basicity, roast temperature, roast time, MgO content, SiO₂ content and ratio of iron powder 1. Among all the factors, basicity is a highly significant factor, and the rest are less significant factors, with the increase of basicity, the compressive strength decreases gradually. Every 0.1% increase in basicity can cause a decrease in the compressive strength of 141.35 N/P.