There are many kinds of pre-crosslinking gel being used at present, but their high temperature resisting performance are poor. The general temperature resisting capacity is only about 120°C. Aiming at the poor resistance to high temperature of current pre-crosslinking gel , an anti-high temperature pre-crosslinking polymer gel is developed in this paper. Experimental results show that this product has appropriate swelling ability, better anti-extruding strength, better deformability and elasticity. The temperature resisting capacity in freshwater can reach as high as 150°C,and it still has comparatively higher strength after high temperature treatment.