In this study,air filter base paper(P)was used as the receiving substrate,polyvinyl alcohol(PVA)and PVA/multi-walled carbon nanotube(MWCNT)spinning solutions were used to prepare electrospun air filter papers(P-PVA and P-PVA/MWCNT,respectively).Then,P-PVA/MWCNT was calendered under different pressures.The effect of MWCNTs on the surface performance of P-PVA/MWCNT was explored and the influence of calendering technology on their structure and filtration characteristics was analyzed.Electron scanning microscope observation showed that the PVA nanofibers on the surface of P-PVA/MWCNT had no beading,and MWCNTs weakened the surface electrostatic phenomenon and had a good micromorphology.During the calendering process,with an increase in pressure,the mean pore size and surface roughness of P-PVA/MWCNT decreased,the initial resistance increased,and the filtration efficiency changed slightly.