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A supramolecular recognition system was constructed based on the water-soluble β-cyclodex-trinpolymer P(AM/β-CD/NaA) as host and hydrophobically modified polyacrylamide P(AM/C18/NaA) as guest.The influences of salt concentration and temperature on the viscosity of the mixture also were studied.O/W crude oil emulsions stabilized by the inclusion complex solutions were prepared, and a laser particle size analyzer and Turbiscan lab stability analyzer were employed to study their stability.The results indicated that these emulsions became more stable than pure amphiphilic polymer.This likely occurred because the elastic polymer gel structure in the continuous phase has the ability to hold oil droplets.