In this paper, we first analyze the motion process of steady-state jets based on the conservation of momentum and establish the control equations. Then we propose an electrospun nanofibers method to increase the acrylic plastic blocks in space, and use the finite element analysis software COMSOL Multiphysics 5.0 to establish the geometrical Model. For the increase of the width and quantity of acrylic plastic block, the distribution of field intensity corresponding to 5cm and 13cm below the needle is analyzed. It is found that the field strength increases with the increase of the width of the acrylic block, and the field strength reaches the maximum when reaching 8cm, which is 7.19 x 10(4)V/m and 5.62 x 10(4)V/m respectively. When the width is 8cm, two pieces of acrylic plastic block of the same width are made to make the acrylic plastic frame. At this point, the field strengthat 5cm and 13cm below the needle continues to increase, and the values are 8.32 x 10(4)V/m and 6.29 x 10(4)V/m respectively.