The invention discloses an advanced twice roadway forming method for two roadways of a large-mining-depth large-mining-height composite roof working face. The method comprises the steps that first, necessity evaluation is carried out on advanced twice roadway forming of the working face; second, wall expanding and bottom broaching are carried out on advanced twice roadway forming of the working face; and final, supports of the advanced twice roadway forming of the working face are reinforced. The necessity of twice roadway forming is determined on the basis of the deformation characteristics of the roadways under the condition of a large-mining-height and large-mining-depth composite roof, and the complete roadway repairing method of advanced twice roadway forming is provided, so that theproblems that roadways of mine working face advanced stress affected sections are large in deformation and difficult to support are effectively solved, the ventilation and recovery efficiency of the two roadways of the working face is remarkably improved, and safe and efficient production of the working face is realized.