The invention discloses a coal pillar-free exploitation Y-shaped venting goaf drilling hole location method and belongs to the field of gas extraction. Drilling hole location is performed according to a gob-side entry retaining Y-shaped goaf gas moving law and a gas enrichment area, so the gas extraction effect is good, an extraction drilling hole penetrates through a caving zone and a fault zone in sequence to reach the lower part of a curved sinking zone, the problem of accurate positioning of the gas extraction holes of overlaying strata structures of different coal measure stratas is solved, and the gas extraction effects are ensured. As massive pressure-relieving gas and the goaf gas are extracted, the problems of upper corner gas ultralimit and return air gas ultralimit are fundamentally solved, and the safety production of a mine is ensured. Meanwhile, under the premise of ensuring the extraction effects, the drilling hole location method is strongly targeted at the gas enrich area, thus reducing the extraction hole number and enlarging the extraction hole location interval; the method has the advantages of small work amount and economy.