Remote interaction of polyacrylic acid hydrogel (gPAA) and poly-4-vinylpyridine hydrogel (gP4VP) in intergel system in lanthanum nitrate solution was studied. Dependencies of swelling coefficient, specific electric conductivity and pH of gPAA and gP4VP in intergel system in lanthanum nitrate solution on hydrogels molar ratios in time were studied. Mutual activation of gPAA and gP4VP hydrogels during their remote interaction provides polymer macromolecules sorption capacity and polymer chain binding degree a significant increase. It is found that lanthanum ions maximum extraction degree and polymer chain binding degree of hydrogels are observed in intergel system gPAA-gP4VP at gPAA:gP4VP ratio of 2:4. Lanthanum ions maximum sorption degree from aqueous solutions is 94.1%, polymer chain internode links binding degree is 78.3%. Lanthanum ions extraction degree at gPAA:gP4VP ratio of 2:4 is 26.4% higher than gPAA extraction degree and 28.0% than gP4VP extraction degree. Polymer chain binding degree of intergel system at gPAA:gP4VP ratio of 2:4 is 21.8% higher than binding degree of gPAA and 23.3% than binding degree of gP4VP. High hydrogel sorption and polymer chain binding degrees in intergel systems occur due to highly ionized state of hydrogels without counterions as a result of mutual activation during hydrogels remote interaction. Desorption degree of lanthanum ions by ethyl alcohol from hydrogel matrix is 85.0%, by nitric acid -96.3%. These results point to great practical importance of intergel systems application in rare earth metal ions extraction from industrial solutions. Intergel systems application can also solve ecological problems of toxic and undesirable ions removal from aqueous systems.