The invention relates to the technical field of textile equipment and discloses an electrostatic spinning device. The electrostatic spinning device comprises an electrostatic generator, a spinneret box and N spinneret modules detachably arranged at the bottom of the spinneret box, wherein N is a natural number greater than or equal to 1. M spinneret holes are formed in the side of the spinneret module, backing to the spinneret box, wherein M is a natural number greater than or equal to 1. The electrostatic generator generates an electrostatic field at the exit of the spinneret holes. The spinning liquid is solidified and formed into the fibrous material when ejected from the spinneret holes under the effect of the electrostatic field. The elector spinning device is capable of conveniently adjusting the proportion of polymer in the woven fibers.