The invention provides a Chinese brush writing realization method on a capacitive touch screen. The method comprises the following steps: enabling a soft conductive pen point to deform to increase a contact area between the soft conductive pen point and the capacitive touch screen, and detecting the contact area between the soft conductive pen point and the capacitive touch screen; according to C=(Epsilon)S/d, calculating capacitance between the soft conductive pen point and the capacitive touch screen; and according to the capacitance, controlling the capacitive touch screen to correspondingly display chirographies of different thicknesses and different colors. Through the above steps, a writing effect of the changeable thickness of the Chinese brush can appear on the touch screen.