The invention relates to an ultrathin nanometer cobweb/nanometer fiber composite protective material manufacturing device, which comprises a computer, a high-voltage static generator and a liquid supply pipeline. The ultrathin nanometer cobweb/nanometer fiber composite protective material manufacturing device is characterized by also comprising a liquid supply device, a self-cleaning multi-nozzlematrix type arrangement spinning device, a transverse mover and a receiver; wherein the computer is respectively connected with the data interface of the liquid supply device, the transverse mover andthe receiver; the liquid supply device is connected with the self-cleaning multi-nozzle matrix type arrangement spinning device by the liquid supply pipeline; and the self-cleaning multi-nozzle matrix type arrangement spinning device is arranged on the transverse mover and is connected with the high-voltage static generator. The device has the advantages of integrated production process, simple operation and high production efficiency.