The Hegenshan high- Al podiform chromitites have Cr# values of 47. 8~54. 9 and Mg# values of 64. 1~73. 7. The spinel- hosted inclusions from the chromitites principally consist of silicates which comprise olivine, orthopyroxene, clinopyroxene, pargasite and albite. Three types of inclusions could be identified based on mineral assemblages and distribution characteristics. The type 1 inclusions are monomineralic inclusions that consist of olivine and clinopyroxene. The type 2 inclusions are characterized by the coexistence of orthopyroxene and clinopyroxene. Both type 1 and type 2 inclusions are xenocrysts hosted by spinel. The type 3 (3a, 3b, 3c) are melt inclusions. Temperatures (1148~1254℃) and pressures (490~1290 MPa) based on clinopyroxene inclusions and coexisting clinopyroxene and othorpyroxene suggest depths of 16 km to 43 km. The compositions of melt inclusions suggest that the parental melt is rich in H 2O, Na, and Si. The calculated Al 2O 3, TiO 2 and (FeO/MgO) values of the parental melt corresponding to the Hegenshan podiform chromitites are 15. 4%~16. 3%, 0. 3%~0. 9% and 0. 6~1. 1, respectively, which are similar to low- Titholeiitic melt. Calculations based on spinel and olivine inclusions suggest that the primitive melt of the Hegenshan podiform chromitites has a high MgO content of 19. 8%. The differences in composition between parental melt and primitive melt suggest an evolving process for primitive melt from high Mg to low Mg. This evolution is probably caused by melt- rock reaction and melt mixing. The genesis of Hegenshan podiform chromitites may have experienced a deep process and finally formed in a shallow mantle. The process in shallow mantle involves processes of the reaction between the melt and harzburgites and mixing of evolved melt and primitive melt.