The present invention is a repair device for repairing cracks in concrete pavements, which can significantly reduce the input of human and material resources to cracks in the paved road, and at the same time normalize rapid vehicle traffic. It relates to a method for repairing cracks in concrete pavement using a repair device, It is formed by passing through the cracked part 50 of the concrete pavement in a diagonal direction by using the perforation device 100, or crossing the cracked part 50 by using the cutting device 200 with a width of a certain interval. After cutting, the concrete inside the width is excavated, and a repair groove forming step (S100) of fixing the'-'-type or'c'-type repair unit 300 and forming a repair groove 60 to inject the repair solution 80 (S100) And, after the repair groove 60 is formed, the repair groove surrounding cleaning step (S200) of cleaning the repair groove and its surroundings by using hydraulic pressure and pneumatic pressure for particles and powder generated in the repair groove process, and the repair groove 60 And a primer application step (S300) of applying the primer 70 to the repair groove 60 and the surrounding area after cleaning, and a'-' type inside the repair groove 60 to which the primer 70 is applied. Alternatively, the maintenance unit insertion and fixing step (S400) of inserting and fixing the'C' type maintenance unit 300, and after cleaning the repair groove 60 and its surroundings, a repair solution 80 is added to the inside of the repair groove 60. Injecting or applying a repair solution injecting/applying step (S500), a surface grinding step (S600) in which the surface around the surface is ground so that there is no curvature after injecting the repair solution (S600), and a sealant inside the cracked area after the surface grinding It consists of a surface finishing step (S700) of finishing the surface by injecting it.
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