The invention relates to the technical field of shield driving construction, and discloses a deep hole explosion pretreatment construction method for a boulder in the subway tunnel shield driving process. The deep hole explosion pretreatment construction method comprises the following steps that 1, preparations for construction are conducted; 2, explosion holes are reasonably formed, wherein the explosion holes comprise blast holes used for placing cartridge bags and empty holes, the locations of all the explosion holes are accurately measured, and corresponding marks are made; 3, the designedexplosion holes are drilled to form the holes; 4, the cartridge bags used for exploding the boulder are designed and processed, the processed cartridge bags are placed in the blast holes respectively, after all the blast holes are filled, the blast holes are covered and protected; 6, an explosion network is connected; 7, the cartridge bags are exploded by using excitation needles, and then misfired bags are checked. The method plays important roles in improving the shield driving speed, ensuring shield construction safety and saving the shield driving cost.