The invention provides a conductive filament and a manufacturing technology thereof, a capacitance brush and a manufacturing technology of the capacitance brush. Raw materials are mixed evenly throughburdening according to proportions; conductive filaments are manufactured through a drawing forming method; and the conductive filaments of which the surfaces are slightly rough and the outer diameters are reduced from large to small are obtained after corrosion, thereby manufacturing the capacitance brush through cleaning the conductive filaments which are free of a front and deform, manufacturing heads which are consistent in specification and of which the tips are gathered, bundling and bonding roots of the heads and fixing the heads into a brush cavity. According to the conductive filament, the conductivity of the capacitance brush is strengthened, the simulation degree of the capacitance brush is improved, the service life of the capacitance brush is prolonged and the capacitance brush is suitable for calligraphy and painting practices on a capacitance screen.