Optical cable connector box and sealing structure of optical fiber units of optical cable connector box

The invention discloses an optical cable connector box and a sealing structure of optical fiber units of the optical cable connector box. A sealing sleeve is provided with a through assembly hole section, the assembly hole is provided with a conical mounting hole section, the diameter of one end close to a clamping piece is smaller than that of the other end, one end, away from the clamping piece, of the sealing sleeve is a threaded hole, and the other end is provided with a limiting piece; an elastic sealing connecting piece is provided with through holes and abuts against the limiting piece for limiting; and a threaded part is connected with a threaded hole, and the threaded part can extrude the elastic sealing connecting part in the rotating process so that the elastic sealing connecting part can be mounted in the conical mounting hole section in a pressed mode and can extrude the optical fiber units in the through holes in the pressed mode. The optical fiber units mounted in the through holes are extruded