The utility model provides an inspection shaft reconstruction structure, including the well room and set up in well room top and the pit shaft, the well room bottom plate of well room package rubbingboard form and well room bottom plate corner sets's circular -arc well room corner post, the mask in opposite directions of looks offset well room corner post has the room post tongue -and -groove that has a perfect understanding from top to bottom, the tongue -and -groove of looks offset well room corner post is embedded to have the lower extreme to place the convex well locular wall board on thebottom plate of well room in, the room post tongue -and -groove internal surface of well room corner post and the both sides of well locular wall board have the slot, the slot is embedded to have therubber sealing rod, the top of well room corner post and well locular wall board is provided with well roof board, the pit shaft sets up on well roof board. The utility model discloses simple structure, well room and pit shaft are assembled by the prefabricated corner post of a plurality of moduluses, prefabricated wallboard, prefabricated roof and prefabricated panel and are constituteed, and solved that current annular prefabricated component folds that the mode of piecing together is difficult to and even the unable standardized component of solving adapts to the contradiction of ever -changing pipeline elevation, have realized the quick construction of inspection shaft assemblyization.