The utility model relates to an insulator crossarm field especially relates to an antifouling compound insulator crossarm of 10kV, including limit looks insulator, well looks insulator and interior looks insulator, limit looks insulator, well looks insulator and interior looks insulator all adopt multistage disc insulator, the installation of the perpendicular ground of disc insulator, limit looks insulator tip is equipped with limit looks wire fixed head, well looks insulator tip is equipped with well looks wire fixed head, interior looks insulator tip is equipped with interior looks wire fixed head, and two sets of limits looks insulator, well looks insulator and interior looks insulator are distinguished symmetric connection from top to bottom and constitute vertical two cross arm structures of returning on the distribution lines straight line pole. Compared with the prior art, the beneficial effects of the utility model are that: 1 )The vertical insulator structural design that arranges can effectively guide the emergence direction of rivers and ice swift current, reduces rivers and ice and slides the short circuit risk between wire and cross arm. 2 )Be connected compatiblely good with current 10kV distribution lines straight line pole.