Currently, more and more chemical additives are used in food products, which leads to the accumulation of harmful substances in the body. Therefore, it is relevant to search for new substances of natural origin with detoxification properties. The aim of the work was to determine the sorption ability of pectin substances and water-soluble polysaccharides isolated from the leaves and flowers of the campsis radicans. By the method of N.K. Kochetkova and M. Sinner isolated polysaccharides from water-borne campsis leaves and flowers: water-soluble polysaccharides, pectin, hemicellulose A and hemicellulose B. The adsorption capacity of pectins and water-soluble polysaccharides was studied on the basis of their complexing properties with respect to lead ions. The determination of their content in the raffinate was carried out by titration with a solution of sodium ethylenediaminetetraacetate disubstituted. To evaluate the nature of the sorbent, the calculated Langmuir and Freindlich equations were used. A study of the sorption ability of polysaccharides isolated from leaves of the campsis radicans showed the presence of a high binding ability of Pb2+ ions in pectin substances was associated with 54.2%, and in water-soluble polysaccharides – 37.5%. Polysaccharides isolated from the flowers of the campsis radicans showed sorption activity in the ratio: pectin substances – 32.6%, water-soluble polysaccharides – 80.1%. The expressed complexing ability of the studied polysaccharides with respect to lead ions was revealed. The ratio of the experimental and calculated data on the values of the adsorption of lead ions showed that the sorption process is largely subordinate to the Langmuir equation. Pectic substances and water-soluble polysaccharides obtained from the leaves and flowers of the campsis radicans can be considered as effective detoxifiers. Further study of the physicochemical properties will make it possible to assess the possibility of their biomedical use.