Abstract: A kind of quickly emulsified technology on the fly was introduced to apply in serious water sensibility formations. Based on the features of serious water sensibility formations and the requirements of fracturing technique, quickly emulsified agents were selected, diesel emulsion formula was developed with the high oil-water proportion of 3∶7. The mixing methods of diesel with gel were improved by mixing on the fly, quick emulsifying and cross-linking gel with proppant which realized the quickly emulsified technology on the fly. Massive fracturing Technology treatments were launched in the oilfield with which 104.5m3 proppants was pumped into formation successfully. High production is acquired after the treatment. So the well-proved results show that this technique can be wide used in the similar serious water sensibility reservoirs.