The invention provides a multi-phase glue supplying apparatus for a gluing machine. The apparatus includes at least one glue supplying end, a plurality of gluing ends and a mold seat. The mold seat is configured to form a glue receiving chamber which is individually linked up to the glue supplying ends and the gluing ends through a conduit. The glue receiving room is also communicated with a plurality of booster pumps which has the same number as the gluing ends. A hot melt glue inside the glue receiving chamber is booster supplied to at least one gluing end of the plurality of gluing ends through the booster pumps. Therefore, the glue supplying apparatus overcomes the problem that the one glue supplying end corresponding to one gluing end method of traditional gluing machines is to the disadvantage of increasing automated gluing production rate.