A coal mine loose powder coal body anchor rod drill hole hole-forming construction technology includes the steps that after construction of a drill hole of an anchor rod is completed, a stirring capsule resin is injected in the drill hole of the anchor rod, all the designed capsule resin is injected into the hole at one time, workers use the anchor rod to push the capsule resin until the capsule resin cannot be pushed continuously, and a torque nut matched with a drilling machine is used for pushing the anchor rod; the slow-speed of revolution is used, a creep speed capsule resin is slowly pushed to the hole bottom, when the capsule resin reaches the hole bottom, the drilling machine is regulated to fast revolution, after the creep speed capsule resin is completely solidified, and the torque nut is opened under the driving of an anchor rod drilling machine to enable the anchor rod to reach a designed preload. By improving installing construction technology of the anchor rod, the difficulties that when the anchor rod is used to construct in the coal mine loose powder coal body, the drill hole is prone to deforming and collapsing, the anchor rod cannot be installed to the hole bottom, and the construction cannot reach the designed installing size can be effectively solved. According to the coal mine loose powder coal body anchor rod drill hole hole-forming construction technology, the anchor rod can be effectively solidified with the capsule resin in the loose powder coal body, the anchor rods with various designed installing sizes can be met, and the construction quality ofthe anchor rods can be guaranteed.