The utility model discloses a municipal administration for pipeline preliminary examination repair device, including first base and second base, the top of first base is equipped with the first bracing piece and the second bracing piece of symmetry of each other, the common welding of one end that first base was kept away from to first bracing piece and second bracing piece has first dead lever, the through -hole has been seted up to the axial wall of first dead lever, the through -hole internal fixation has cup jointed first bearing, first bearing has cup jointed first pivot, the one end of first pivot is passed the through -hole and is extended to the outside of first dead lever and fix and has cup jointed first belt pulley, the fixed second bearing that has cup jointed of the other endof first pivot, the wall connection of second bearing has the second dead lever, there are third bracing piece and fourth bracing piece in the both ends of second dead lever vertical welding respectively. The utility model discloses a can rise automatically and directly send the staff pipeline of the different degree of depth to, and be equipped with during the fan can emit into the air in the external world sewer, make the sewer keep the municipal administration for pipeline preliminary examination repair device who ventilates.