The bottom water coning is the key which restricts the effective development of bottom water reservoirs. Stimulation potential of nitrogen foam anti-water-coning technology in high-temperature and high-salinity bottom water reservoirs was investigated. Property analyses of foam system show that the cocoamido propyl hydroxy sulfobetaine（CHSB）has high salt tolerance and temperature resistance，and the foam formed from CHSB can achieve the effect of selective blocking water channel with its sensitivity to light crude oil. Physical simulation experiments present that nitrogen foam injection at the top of the water cone can effectively control water coning，increase the sweep efficiency of the bottom water and replace the residual oil at the top reservoir. As foam rupture occur frequently in the water cone when it is stable，shutdown days should not last long. At the same time，the lower yield of opening production of the wells could weaken the erosion of the nitrogen foam by the bottom water and enhance the foam effectiveness of reducing water production. Compared with shut-in coning control and compound coning control of nitrogen foam and nitrogen，nitrogen foam coning control can yield an extra recovery rate of 16.45% and 8%，respectively.