The invention discloses a beta-glucan-tea polyphenol compound and application thereof. The compound is prepared by a the following steps of: adding a water solution of beta-glucan and a water solution of tea polyphenol or an activated monomer into a dialysis bag; placing a dialysis device in a phosphate buffer, the pH of which is 3-7 and ionic strength of which is 0.5-0.3 mol/L, and dialyzing at 20-60 DEG C until balance is achieved to obtain the compound. The beta-glucan-tea polyphenol compound prepared by the method has stronger oxidation resistance than independent beta-glucan or tea polyphenol, has synergism action on the cleaning capability of superoxide anions within a certain concentration range, can be used for preparing antioxidant agents and has good development and application prospects in the filed of food preservation. The beta-glucan-tea polyphenol compound can also be used for preparing antioxidant foods or medicines and has good development and application prospects inthe fileds of health foods and medicines.