The invention discloses a wine filling machine central distributor. The wine filling machine central distributor comprises a central pipe, an upper sleeve and a lower sleeve. A rotary outer shell is rotationally arranged on the central pipe and comprises at least two outer shell bodies which are detachably fixed to the upper sleeve and the lower sleeve. Each outer shell body is circumferentially provided with a plurality of pipe connectors. The pipe wall of the central pipe is provided with a plurality of sets of medium through holes which extend axially. Medium inlets are communicated with medium outlets. The positions of the pipe connectors of one of the outer shell bodies are corresponding to the positions of liquid distributing openings and the pipe connectors are communicated with the liquid distributing openings. The pipe connectors of other outer shell bodies are communicated with all the sets of medium through holes in a one-to-one correspondence mode through the corresponding medium inlets. Sealing devices are arranged between all the outer shell bodies and the outer wall of the central pipe. According to the central distributor, the rotary outer shell is arranged to be of a split structure, so that machining is simpler, assembling is more convenient, and the installation difficulty of the sealing devices is lowered. Consequentially, the assembling precision of the central distributor is higher, the service life of the central distributor is longer and the maintenance and repair cost of the central distributor in the future is lower.