The invention discloses an anti-vibration mounting base for a ship diesel engine. The anti-vibration mounting base for the ship diesel engine comprises a base, a tightening mechanism and two pedestals, wherein the two pedestals are arranged at two ends of the top of the base in a first direction; a plurality of extruding plates are continuously arranged at the top of the base in sequence from bottom to top; the two adjacent extruding plates are hinged with each other; a tensioning rope is arranged at the top of the extruding plate at the topmost end; the tightening mechanism is positioned above the extruding plates; the top end of the tensioning rope extends into the tightening mechanism so that the tightening mechanism can deploy and retract the tensioning rope; propping mechanisms are arranged on the internal side edges of the extruding plates; the propping mechanisms comprise supporting rods and claws; one ends of the supporting rods are arranged on the internal side edges of the extruding plates; the plurality of claws are arranged at the other ends of the supporting rods; clamping grooves are formed in the bottoms of the pedestals so that the pedestals are clamped on the base; the pedestals can move on the base in a reciprocating manner in the first direction; and the pedestals are fixed on the base through locating pieces. The anti-vibration mounting base for the ship diesel engine can stably fix the ship diesel engine.