The invention discloses a quantitative and spaced charging device for tunnel blasting holes and capable of being used repeatedly. The quantitative and spaced charging device is composed of a semicircular charging pipe and supporting systems arranged on the two sides of the charging pipe. Reinforcing steel plates in the same shape are connected to the inner side of the charging pipe through electric melting, so that the overall rigidity is improved. Fixing clamping grooves are formed in the bottoms of the inner sides of the steel plates. Partition plates provided with identical notches are mounted in the clamping grooves in a clamped mode and slide forwards and backwards with the clamping grooves as rails. According to the quantitative and spaced charging device, a semicircular charging sleeve is designed, so that the whole charging process is made visual, and accurate adjustment can be achieved in the explosive charging process; scale lines are arranged so that repeated measurement ofthe distance between explosive bins can be simplified, and accordingly, the charging time is greatly shortened; the partition plates can be detached and can slide along the clamping grooves so that the quantitative and spaced charging device can meet different blasting requirements; and the quantitative and spaced charging device can be pulled out of a blasting hole without touching a blasting cartridge after charging is completed and can be restored by adjusting the positions of connecting rods and supporting blocks after being pulled out of the blasting hole so that the quantitative and spaced charging device can be used repeatedly, manpower resources are greatly saved, the cost is greatly reduced, and the explosive charging process is made simple and standard.