The utility model provides a stake of multistage formula heat, includes the casing, is equipped with heat dissipation condensation segment fin on the outer wall of casing one end, is equipped with at least one slider in the casing, and this at least one slider falls into two at least each other not communicating intraductal cavitys with the casing is inside, and intraductal cavity communicates with each other with the external world through the condensate fill orifice, has all filled the refrigerant in every intraductal cavity. A plurality of independent mutual not communicating cavitys of the inside share of this stake of multistage formula heat casing have strengthened the area of contact of liquid working medium with stake zhou tuti to dan genre stake and the heat conduction power between the soil body have on every side been increased. The heat stake is directed against different stake zhou tuti temperature and atmosphere difference in temperature segmentation start -up work at the pile body within range, utilizes the relatively poor heat with seasonal frozen ground round the clock in spring, summer, three season in autumn to derive the atmosphere, and the stake of realization heat can all start work throughout the year.