A graphics processing method, which is applied to a plurality of buffers at least including a first buffer served as an on-screen buffer and a second buffer served as an on-drawing buffer, includes the steps of: sending a drawing command related to the second buffer to a drawing engine; when the drawing command related to the second buffer are received, drawing graphic data stored in the second buffer; sending an asynchronous flush command related to the second buffer to the drawing engine in order to confirm whether the drawing command related to the second buffer is completed; flushing the second buffer; and after the second buffer is flushed, sending a first notice signal to notify a display engine that the second buffer is capable of being flipped.