The invention discloses a dumper power assembly vibration isolator for mine. The dumper power assembly vibration isolator comprises a supporting barrel, wherein the supporting barrel comprises a barrel body and a bearing flange; the bearing flange extends outsides from the upper edge of the barrel body in a bending way; a rubber block is arranged on the supporting barrel; the rubber block comprises a lower bearing part and an upper bearing part; the lower bearing part is arranged in the barrel body; the edge of the upper bearing part extends outsides from the upper edge of the lower bearing part to form a rubber flange; the rubber flange is born by the bearing flange; the upper surface of the upper bearing part is spherical; through holes are formed in the rubber block; the through holes penetrate through a screw rod; an upper pressing block is sleeved at the middle part of the screw rod; the upper pressing block comprises an upper entering part and an upper pressing part; the upper entering part and the upper pressing part form steps; the lower end of the upper entering part is inserted into the through hole; a pressing plate is sleeved on an upper inserting part between the upper pressing part and the upper bearing part; an upper cover plate is arranged at the upper end of the screw rod; and space is formed between the upper cover plate and the upper pressing part. The structure has an excellent damping effect.