Sealing structure of optical fiber distribution box

The utility model discloses an optical fiber distribution box sealing structure, which comprises a lower shell and an upper shell, the upper shell is arranged above the lower shell, two sides of the bottom surface of the upper shell are provided with plugging blocks, and one end of each plugging block extends into a slot arranged at two sides of the top surface of the lower shell. According to the utility model, the plug-in block on the bottom surface of the upper shell is plugged into the slot on the top surface of the lower shell, when the first wedge block on one side surface of the plug-in block moves to a position below the second wedge block, the upper shell and the lower shell can be installed, and when parts in the upper shell and the lower shell need to be maintained and overhauled, the upper shell and the lower shell can be installed conveniently. A pull rod is pulled to enable a second wedge block at one end of the pull rod to move, and when the second wedge block is far away from a first wedge blo