The utility model provides a modified biological bituminous pavement structure, includes: the order of pressing top -down, branch in surface course, first tie coat, first waterproof layer, the modified biological pitch under surface course, second tie coat, second waterproof layer, plain asphalt surface course on maybe the plain asphalt, go up between surface course and the well surface course, well surface course and be provided with first tie coat and first waterproof layer, second tie coat and second waterproof layer down between the surface course respectively, well surface course adopts the better modified biological pitch of high -temperature behavior, the more effectual anti rut ability that has improved the road surface, owing to adopt biological pitch to replace some asphalt among the modified biological bituminous paving, can effectually alleviate the global energy deficient pressure that brings gradually, through the turn on the water special setting of tie coat of first, second, effectual water stability can general drawback when having solved well surface course and laying biological pitch with modified biological pitch.