The invention relates to a method for evaluating the application of a stabilizing auxiliary in a beer filtration process, and in particular relates to a method for rapidly evaluating the usage amount of silica gel and PVPP (Crosslinked Polyethylene Pyrrolidone) by using a charge titration technique. Charges of colloidal particles of sensitive protein and sensitive polyphenol in beer are negative, the charges of silica gel and PVPP are positive, and along with the increase of the usage amount of the silica gel and the PVPP, the charges of the colloidal particles in the beer are gradually converted into positive charges from negative charges. The addition amount of the silica gel and the PVPP of which the number of the charges is approximate to 0 is taken as the optimal usage amount of the silica gel and the PVPP. According to the method, by evaluating the charge situation of the colloidal particles of the silica gel and the PVPP of the beer, the optimal action condition and optimal usage proportion of the beer stabilizing auxiliaries can be effectively determined. Therefore, the application of the stabilizing auxiliary can be rapidly optimized, and the purposes of stabilizing the quality of the beer and lowering the production cost are achieved.