The invention relates to an acrylic nonwoven fabric, in particular to an antistatic and antibacterial acrylic nonwoven fabric and a preparation method thereof. The antistatic and antibacterial acrylicnonwoven fabric is prepared from polyacrylonitrile dry power dry basis, antistat, antibacterial agent, pore-foaming agent, synergist, anti-sticking agent and solvent; the synergist is glycerinum, andthe pore-foaming agent is polyethylene glycol; the anti-sticking agent is polyoxyethylene; and the weight-average molecular weight of the polyacrylonitrile dry power is 70000-100000. The antistatic and antibacterial acrylic nonwoven fabric has the advantages that the pore-foaming agent and the synergist are introduced, the problems that the compatibility is poor when the antistat and the antibacterial agent are added into the polyacrylonitrile simultaneously, the antistatic and antibacterial performance is poor, and the effect of simultaneous addition of the antistat and antibacterial agent descends than that of single addition of the antistat and antibacterial agent are solved, the prepared nonwoven fabric has a significant antistatic and antibacterial effect, the effect of the simultaneous addition of the antistat and antibacterial agent is greatly improved than that of the single addition of the antistat and antibacterial agent, and the physical and mechanical properties of the nonwoven fabric cannot not be affected. The invention further provides the preparation method, the materials are obtained easily, the industrialized production is easy, and the economic and social benefits are better.