The invention discloses a flexible treatment liquid and a method for treating a pull ring material by using the same. The flexible treatment liquid comprises the following raw materials of magnesium fluoride, sodium tripolyphosphate, hexafluorozirconic acid, sodium fluorosilicate, hydrochloric acid, nitric acid, phosphoric acid, vinyl triethoxy silane, sulfuric acid, calcium nitrate, water, dialkyl peroxide, bicarbonate peroxide, propyl epoxy acrylate, nano silicon dioxide and aluminum oxide. Through reasonable proportioning, the flexible treatment liquid can solve the problems that in a traditional process, hexavalent chromium passivation is large in toxicity, and the chromium-free passivation is low in toxicity but the corrosion resistance is poor, meanwhile, the problems that the treatment of liquid medicine used when an organic film is coated on the surface of an inorganic film in a composite passivation process is complex, and the adhesive force is poor are solved, good corrosionresistance and fingerprint resistance are achieved, the effects of being strong in adhesive force, safe, non-toxic and simple in process are achieved, and therefore, the flexible treatment liquid is suitable for industrial production.