PEEK filament-capillary, with normal working temperature of 260℃, has corrosion resistance and can be used in solvent for a long time. Because of its hydrolysis resistance, PEEK filament-capillary can be cleaned and disinfected in high temperature steam. PEEK filament-capillary is an environmentally friendly material, which meets the requirements of FDA food hygiene level, and has flame retardancy and wide application range.