Electrostatic ink-jet printer nozzle and preparation method thereof

The invention relates to an electrostatic ink-jet printer nozzle, which comprises a first silicon substrate and a second silicon substrate arranged above the first silicon substrate, a liquid storage tank is arranged on one side, facing the first silicon substrate, of the second silicon substrate; the first silicon substrate is provided with a liquid inlet channel which is communicated with the liquid storage tank and enables liquid to enter the liquid storage tank and a nozzle which is arranged at an interval with the liquid inlet channel and enables the liquid in the liquid storage tank to flow out; a flow limiting part for dividing the liquid storage tank into a liquid inlet area and a liquid spraying area is also arranged in the liquid storage tank; the flow limiting part is positioned between the liquid inlet channel and the nozzle; the flow limiting part is provided with a flow limiting channel which is communicated with the liquid inlet area and the liquid spraying area; a flow limiting column is arran