The present paper deals with the application of ⁵⁷Fe and Mossbauer spectroscopy in the study of magnetic genesis of red earth derived from basalt in Kunmin. The results obtained have shown that (1) maghemite, magnetite and titanohematite aer the main magnetic minerals in the soil, (2) these magnetic minerals mainly come from titanium dissociation titanium, and oxidization of original iron-titanium minerals such as titanomagnetite and ilmenite. In the soil-forming process, Ti⁴⁺ dissociation results in the minerals lends to be transformed into magnetite, maghemitc and hematite, formed the specific profile of magnetic suscepcibility and the strongest soil mastnetism in China.