The utility model provides an adjustable arrester installation device which constitutes and includes: the cell type body, the cell type body comprises three blocks of steel sheets reserve the arrester mounting hole on the long steel sheet of cell type body upper end, there is suitable installation distance between the steel sheet of cell type body both sides, the cell type body is installed on the cross arm of electric power iron tower through two jackscrews. The beneficial effects are that: the utility model discloses simple structure, easy installation has been solved and is makeed the fixed and arrester mounted position of arrester mounted position satisfy on -the -spot demand, electrical distance perhaps can not to obtain the condition about guaranteeing.