The butadiene-acrylonitrile rubber/lithium perchlorate (NBR/LiClO4) antistatic composites have been prepared by melt-compounding method. The effects of LiClO4 content on the vulcanization properties, mechanical properties and electric properties of NBR were studied. The results showed that LiClO4 promoted the vulcanization reaction and increased the crosslink density of NBR. The mechanical properties of NBR have been improved with the increasing in LiClO4 content. The addition of LiClO4 reduced the volume resistivity and surface resistivity of NBR, which turned the insulating materials into antistatic materials. When the content of LiClO4 was 40 phr, the volume resistivity and surface resistivity of NBR were 1.1×108 ·cm and 2.0×109 , respectively.