The invention discloses a method for preparing a white frame in a white OGS touch screen. The method comprises the following steps: a) cleaning a glass board of the touch screen; b) carrying out silk-screen printing for a first white printing ink layer on the frame area of the glass board of the touch screen; c) carrying out silk-screen printing for a second white printing ink layer on the upper surface of the first white printing ink layer; d) curing; e) cleaning the glass board of the touch screen; f) coating black photoresist; g) pre-curing the black photoresist; h) exposing; i) developing to form a frame-shaped black photoresist layer; j) curing the black photoresist layer to prepare the white frame, wherein the black photoresist is spray coated by using a noncontact coating process, and the black photoresist layer on the uppermost layer is formed by exposing and developing to prevent impurities from being carried to the product; the black photoresist basically discharges no gas under high temperature film coating, thereby greatly improving the film coating quality; in addition, the viscosity of the black photoresist is low, so that the surface smoothness of the product can be improved; the black photoresist can be selectively printed by inkjet printing to save the production cost.