本发明涉及聚合物技术领域，尤其涉及一种负载型聚合物和负载型水凝胶。本发明公开了一种负载型聚合物，该负载型聚合物由聚合物和负载在聚合物上的多价阴离子构成；所述聚合物包括至少一种电解质单元；所述电解质单元具有式(Ⅰ)或式(II)所示结构。该负载型聚合物中的带正电的R1基团，可以作为阴离子，特别是酸根离子的负载点，利用静电作用将阴离子负载于聚合物中。在一定的外界刺激 (如多价的金属离子)下，基于不同的平衡之间的转化，聚合物能将阴离子释放，也能进行再次负载。

The invention relates to the technical field of polymers, in particular to a supported polymer and a supported hydrogel. The invention discloses a supported polymer, which consists of a polymer and a polyvalent anion supported on the polymer; The polymer comprises at least one electrolyte unit; The electrolyte unit has the structure shown in formula (I) or formula (II). The positively charged R1 group in the supported polymer can be used as the loading point for anions, especially acid ions, to support anions in the polymer by electrostatic action. Under certain external stimuli (such as polyvalent metal ions), the polymer can release anions or re-load them based on the conversion between different equilibria.